[Matplotlib-users] Basemap installation on Ubuntu 9.04 (Jaunty
-- _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E Dr. Nicolas Fauchereau Senior Researcher CSIR - NRE Research Group: Ocean systems and climate 15 Lower Hope street, Rosebank 7700 South Africa _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Basemap installation on Ubuntu 9.04 (Jaunty Jackalope)
Hi all I was wondering if anyone managed to find / install Basemap on a i386 machine running ubuntu 9.04 (Jaunty Jackalope) ... I've installed the debs through synaptic, and I've tried without success to compile Basemap (0.99), with failure at the libgeos compilation. Trying to install "old" .deb (python-basemap_0.99-0ads1_i386.deb) complains about python 2.6 do I have to redo all the installation (numpy etc) using an older python (2.5) ? thanks for any advice -- _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E Dr. Nicolas Fauchereau Senior Researcher CSIR - NRE Research Group: Ocean systems and climate 15 Lower Hope street, Rosebank 7700 South Africa _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] problem with streamplot method in basemap-1.0.3(4)
Hi all I have installed successively basemap 1.0.3 and 1.0.4 on top of my EPD 7.3 (linux x86_64) running on a linux ubuntu 11.10. archives downloaded from http://sourceforge.net/projects/matplotlib/files/matplotlib-toolkits/basemap-1.0.X/ My matplotlib version is 1.1.0 and I have checked that indeed the call to mpl_toolkits.basemap returns the correct version (I have installed successively 1.0.3 and then cleaned up and installed 1.0.4) the traceback is """ Traceback (most recent call last): File "streamplot_demo.py", line 32, in m.streamplot(x,y,udat,vdat,color=speed,linewidth=2,density=2,cmap=plt.cm.spectral) File "/home/nicolasf/epd/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.py", line 3370, in streamplot ret = ax.streamplot(x,y,u,v,*args,**kwargs) AttributeError: 'AxesSubplot' object has no attribute 'streamplot' """ the doc string for streamplot_demo.py (in the example folder of the basemap1.0.4 sources) states that it requires the vectorplot scikit, which I have installed but been unable to get working (complains about missing lic_internal module ...) what is confusing is that the entry for streamplot_demo in the README (from basemap_1.0.4-examples) states that it "shows the new matplotlib streamplot method to visualize wind fields" Do I need to upgrade matplotlib to the development version ? thanks a lot in advance for any help on that one ... -- ----- Dr. Nicolas Fauchereau Climate Scientist – National Climate Centre National Institute of Water and Atmospheric Research (NIWA) Ltd. 41 Market Place Viaduct Precinct, Auckland NEW ZEALAND Tel: +64 (0)9 375 2053 -- "It is a mistake to think you can solve any major problems just with potatoes.". Douglas Adams. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] problem with streamplot method in basemap-1.0.3(4)
Thanks Ben so streamplot "will" be part of a future stable release of matplotlib then ? one does not need the scikits.vectorplot installed ? I will try and pull the latest development version of matplotlib and install it (linux and mac os X), and then come back to the list to give some feedbacks cheers Nico On 21 June 2012 11:37, Benjamin Root wrote: > > > On Wednesday, June 20, 2012, Nicolas wrote: >> >> Hi all >> >> I have installed successively basemap 1.0.3 and 1.0.4 on top of my EPD >> 7.3 (linux x86_64) running on a linux ubuntu 11.10. >> >> archives downloaded from >> >> http://sourceforge.net/projects/matplotlib/files/matplotlib-toolkits/basemap-1.0.X/ >> >> My matplotlib version is 1.1.0 and I have checked that indeed the call >> to mpl_toolkits.basemap returns the correct version (I have installed >> successively 1.0.3 and then cleaned up and installed 1.0.4) >> >> the traceback is >> >> """ >> Traceback (most recent call last): >> File "streamplot_demo.py", line 32, in >> >> m.streamplot(x,y,udat,vdat,color=speed,linewidth=2,density=2,cmap=plt.cm.spectral) >> File >> "/home/nicolasf/epd/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.py", >> line 3370, in streamplot >> ret = ax.streamplot(x,y,u,v,*args,**kwargs) >> AttributeError: 'AxesSubplot' object has no attribute 'streamplot' >> """ >> >> the doc string for streamplot_demo.py (in the example folder of the >> basemap1.0.4 sources) states that it requires the vectorplot scikit, >> which I have installed but been unable to get working (complains about >> missing lic_internal module ...) >> >> what is confusing is that the entry for streamplot_demo in the README >> (from basemap_1.0.4-examples) states that it "shows the new matplotlib >> streamplot method to visualize wind fields" >> >> Do I need to upgrade matplotlib to the development version ? > > > > Yes. Streamplot hasn't been officially released yet. Maybe Basemap should > check for the function first? > > Ben Root -- - Dr. Nicolas Fauchereau Climate Scientist – National Climate Centre National Institute of Water and Atmospheric Research (NIWA) Ltd. 41 Market Place Viaduct Precinct, Auckland NEW ZEALAND Tel: +64 (0)9 375 2053 -- "It is a mistake to think you can solve any major problems just with potatoes.". Douglas Adams. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] problem with streamplot method in basemap-1.0.3(4)
Hi all FYI, the streamplot example does work with the dev. version of matplotlib (that I pulled out from github, more specifically matplotlib-matplotlib-v1.1.1-rc2-664-ga2d44d5.zip) thanks Nico On 22 June 2012 02:51, wrote: > Send Matplotlib-users mailing list submissions to > matplotlib-users@lists.sourceforge.net > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > or, via email, send a message with subject or body 'help' to > matplotlib-users-requ...@lists.sourceforge.net > > You can reach the person managing the list at > matplotlib-users-ow...@lists.sourceforge.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Matplotlib-users digest..." > > > Today's Topics: > > 1. problem with streamplot method in basemap-1.0.3(4) (Nicolas) > 2. Re: problem with streamplot method in basemap-1.0.3(4) > (Benjamin Root) > 3. Re: problem with streamplot method in basemap-1.0.3(4) (Nicolas) > 4. Re: problem with streamplot method in basemap-1.0.3(4) > (Jeff Whitaker) > 5. Can boxplot handle np.NaN? (Wouter Overmeire) > > > ------ > > Message: 1 > Date: Thu, 21 Jun 2012 11:28:55 +1200 > From: Nicolas > Subject: [Matplotlib-users] problem with streamplot method in > basemap-1.0.3(4) > To: matplotlib-users@lists.sourceforge.net > Message-ID: > > Content-Type: text/plain; charset=windows-1252 > > Hi all > > I have installed successively basemap 1.0.3 and 1.0.4 on top of my EPD > 7.3 (linux x86_64) running on a linux ubuntu 11.10. > > archives downloaded from > http://sourceforge.net/projects/matplotlib/files/matplotlib-toolkits/basemap-1.0.X/ > > My matplotlib version is 1.1.0 and I have checked that indeed the call > to mpl_toolkits.basemap returns the correct version (I have installed > successively 1.0.3 and then cleaned up and installed 1.0.4) > > the traceback is > > """ > Traceback (most recent call last): > File "streamplot_demo.py", line 32, in > m.streamplot(x,y,udat,vdat,color=speed,linewidth=2,density=2,cmap=plt.cm.spectral) > File > "/home/nicolasf/epd/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.py", > line 3370, in streamplot > ret = ax.streamplot(x,y,u,v,*args,**kwargs) > AttributeError: 'AxesSubplot' object has no attribute 'streamplot' > """ > > the doc string for streamplot_demo.py (in the example folder of the > basemap1.0.4 sources) states that it requires the vectorplot scikit, > which I have installed but been unable to get working (complains about > missing lic_internal module ...) > > what is confusing is that the entry for streamplot_demo in the README > (from basemap_1.0.4-examples) states that it "shows the new matplotlib > streamplot method to visualize wind fields" > > Do I need to upgrade matplotlib to the development version ? > > thanks a lot in advance for any help on that one ... > > -- > - > Dr. Nicolas Fauchereau > Climate Scientist ? National Climate Centre > National Institute of Water and Atmospheric Research (NIWA) Ltd. > 41 Market Place > Viaduct Precinct, Auckland > NEW ZEALAND > Tel: +64 (0)9 375 2053 > ------ > "It is a mistake to think you can solve any major problems just with > potatoes.". > Douglas Adams. > > > > -- > > Message: 2 > Date: Wed, 20 Jun 2012 19:37:04 -0400 > From: Benjamin Root > Subject: Re: [Matplotlib-users] problem with streamplot method in > basemap-1.0.3(4) > To: Nicolas > Cc: "matplotlib-users@lists.sourceforge.net" > > Message-ID: > > Content-Type: text/plain; charset="iso-8859-1" > > On Wednesday, June 20, 2012, Nicolas wrote: > >> Hi all >> >> I have installed successively basemap 1.0.3 and 1.0.4 on top of my EPD >> 7.3 (linux x86_64) running on a linux ubuntu 11.10. >> >> archives downloaded from >> >> http://sourceforge.net/projects/matplotlib/files/matplotlib-toolkits/basemap-1.0.X/ >> >> My matplotlib version is 1.1.0 and I have checked that indeed the call >> to mpl_toolkits.basemap returns the correct version (I have installed >> successively 1.0.3 and then cleaned up and installed 1.0.4) >> >> the traceback is &
Re: [Matplotlib-users] Taylor diagram (mdekauwe)
Hi Jean-Marie Epitalon (from IPSL) developped several scripts devoted to model inter-comparison, included Taylor Diagram, which you can find here (http://www.ipsl.jussieu.fr/~jmesce/Taylor_diagram/Miscelaneous/plot_taylor_diagrams.py) see also here (http://www.ipsl.jussieu.fr/~jmesce/Taylor_diagram/index.html) and follow the complete description of the program code hope that helps Nicolas > Message: 6 > Date: Thu, 9 Dec 2010 14:42:41 -0800 (PST) > From: mdekauwe > Subject: [Matplotlib-users] Taylor diagram > To: matplotlib-users@lists.sourceforge.net > Message-ID: <30421393.p...@talk.nabble.com> > Content-Type: text/plain; charset=us-ascii > > > Hi, > > Has anyone ever managed to draw a taylor diagram in Matplotlib? For example > like this > > http://www.mathworks.com/matlabcentral/fx_files/20559/2/taylordiag_fig.jpg > > Cheers, > > Martin > -- > View this message in context: > http://old.nabble.com/Taylor-diagram-tp30421393p30421393.html > Sent from the matplotlib - users mailing list archive at Nabble.com. > >___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > End of Matplotlib-users Digest, Vol 55, Issue 12 > **** > -- _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E Dr. Nicolas Fauchereau CSIR - NRE Research Group: Ocean systems and climate 15 Lower Hope street, Rosebank 7700 South Africa tel: 021 658 2764 _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] transformations
Hello, I tried to use some affine transformations, but it didn't match to get it works. I use matplotlib 0.87.5 with python 2.4.3 and Numeric 24.2 on winXP. I tried for example : plot([1,0,1],[0,1,0], transform = matplotlib.transforms.Affine(0,1,1,0,0,0)) Then I got : Traceback (most recent call last): File "", line 1, in ? File "C:\Python24\lib\site-packages\matplotlib\pylab.py", line 2019, in plot ret = gca().plot(*args, **kwargs) File "C:\Python24\lib\site-packages\matplotlib\axes.py", line 2124, in plot self.add_line(line) File "C:\Python24\lib\site-packages\matplotlib\axes.py", line 879, in add_line xys = self._get_verts_in_data_coords( File "C:\Python24\lib\site-packages\matplotlib\axes.py", line 934, in _get_verts_in_data_coords xys = trans.numerix_xy(asarray(xys)) ValueError: Domain error on Transformation::numerix_xy >>> plot([1,0,1],[0,1,0], transform = matplotlib.transforms.Affine(1,0,0,1,0,0)) Traceback (most recent call last): File "", line 1, in ? File "C:\Python24\lib\site-packages\matplotlib\pylab.py", line 2019, in plot ret = gca().plot(*args, **kwargs) File "C:\Python24\lib\site-packages\matplotlib\axes.py", line 2124, in plot self.add_line(line) File "C:\Python24\lib\site-packages\matplotlib\axes.py", line 879, in add_line xys = self._get_verts_in_data_coords( File "C:\Python24\lib\site-packages\matplotlib\axes.py", line 934, in _get_verts_in_data_coords xys = trans.numerix_xy(asarray(xys)) ValueError: Domain error on Transformation::numerix_xy Thanks a lot, Nicolas - Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses.- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] RE : Re: RE : Re: transformations
I can't figure why Polygons are used even when I simply draw lines. But I know at least why I use empty list of vertices. ;) In fact, I use matplotlib for a dynamic geometry software (something like GeoGebra), and systematic use of high-level functions of matplotlib would be to slow for that purpose. And yet, I didn't want to use too low-level functions, like the renderer's ones, for I didn't want to depend too much of a particular renderer. So, I created once a set of plots and fills for every object, and then I modified its attributes . I used to set its vertices to an empty list when I didn't want it to appear on the figure. I suppose now I'd better use instead something like. my_plot._visible = False Nevertheless, I think empty vertices should be supported here (or not supported at all for all renderers - for in 0.90.1 it still works with tkagg for example) Nicolas On 6/6/07, John Hunter <[EMAIL PROTECTED]> wrote: On 6/6/07, Nicolas <[EMAIL PROTECTED]> wrote: > Unfortunately, I didn't use instantiated Polygon items myself, so for now I > can't figure which part of my code produces indirectly such empty > Polygons... > > May it be however possible to modify a little matplotlib code, so as to > assure the compatibility with the previous existing versions of matplotlib ? > Something like : I don't have a problem with this, but it just makes it easier for latent bugs in your code to remain hidden. Should we raise in the Polygon constructor is you pass in an empty list of vertices? Of course, you can always set xy directly, so this won't catch all the errors unless we use properties or traits. JDH - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] export of a zone in png
Hi,
I would like to export a zone of a Figure in .png.
Something like figure.savefig("mypicture.png", box = (0,0,5,5))
How may I proceed, without drawing all the plots again ?
I use wxagg.
Thanks,
Nicolas
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[Matplotlib-users] export of a specific zone of a figure
Hi,
I would like to export a zone of a Figure in .png.
Something like figure.savefig("mypicture.png", box = (0,0,5,5))
How may I proceed, without drawing all the plots again ?
I use wxagg.
Thanks,
Nicolas
-
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Re: [Matplotlib-users] export of a specific zone of a figure
Thanks for your reply. However, I don't want to had a PIL dependency. Is there any other method, using only matplotlib or wx ? Nicolas - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] export of a specific zone of a figure
Hi,
I can figure the first steps :
something like :
matrix = []
buffer = self.get_renderer().tostring_argb()
l, h = self.GetSize()
for ligne in xrange(h):
matrix.append([])
for colonne in xrange(l):
i = 4*(ligne*h + colonne)
pixel = buffer[i:i+4]
matrix[-1].append(pixel)
zone_to_export = array(matrix)[pixely0:pixely1, pixelx0:pixelx1]
new_buffer = buffer("".join("".join(elt for elt in ligne) for
ligne in zone_to_export ))
But then I don't know what to with this new buffer.
I tried to create a new RenderAgg instance, so as to use its png export
facilities.
r = RendererAgg(pixelx1 - pixelx0, pixely1 - pixely0, Value(dpi))
...
r._renderer.write_png(nom)
But I don't know what to put between the two previous lines.
How may I load a buffer content into a RenderAgg instance ?
I suppose I may use something like :
r.draw_image(0, 0, im)
but what is the correct format for im ? Is there an Image class in
matplotlib (I looked for, but didn't find).
How may I convert my buffer ?
Thanks a lot,
Nicolas
How may I transform my buffer into an image ?
On 6/28/07, John Hunter <[EMAIL PROTECTED]> wrote:
On 6/28/07, Nicolas <[EMAIL PROTECTED]> wrote:
> Thanks for your reply.
>
> However, I don't want to had a PIL dependency.
>
> Is there any other method, using only matplotlib or wx ?
agg offers methods to convert the image pixel buffer to strings or
buffers, which you could then convert to numpy arrays, so a slice
extraction, and reconvert back to a buffer and ultimately a PNG. I
don't have time right now to write some example code, but you may want
to poke around in backend_agg to see if you can figure it out, and if
not remind me next week.
Thanks,
JDH
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Re: [Matplotlib-users] export of a specific zone of a figure
Thank you very much. I know very little about numpy in fact. If I don't find a pure matplotlib method, I will use your suggestion with wx. I think however matplotlib may be used only (and it will be even better as I plan to make a Qt version in the future) So, in : from matplotlib.transforms import Value from matplotlib.backends.backend_agg import RendererAgg r = RendererAgg(50, 50, Value(72)) r.draw_image(0, 0, im) What is the correct format for im ? Thanks, Nicolas On 7/2/07, Christopher Barker <[EMAIL PROTECTED]> wrote: I don't know how to do it with the MPL agg back-end, but I think you mentioned wx, and you can do it there instead. a wxImage can be constructed from a buffer object, then saved as a PNG. You may need to set the rgb and alpha portions separately. See the wxPython wiki and search for "Image". Also: > matrix = [] > buffer = self.get_renderer().tostring_argb() > l, h = self.GetSize() > for ligne in xrange(h): > matrix.append([]) > for colonne in xrange(l): > i = 4*(ligne*h + colonne) > pixel = buffer[i:i+4] > matrix[-1].append(pixel) This is a very slow way to create the numpy array! Option a: first create an empty array: matrix = numpy.empty((l,h,4), numpy.byte) then fill that in. but even better: you can build the array directly from the buffer string: matrix = numpy.fromstring(buffer, dtype=numpy.byte) lotlib-users -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R(206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception [EMAIL PROTECTED] - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] adding a box (domain) on a basemap map
Hi all sorry for posting this question that might have been answered before, but I'm in the urgent need of finding a way to overlay a rectangular box on a basemap map (cylindrical projection) given the latitudes and longitudes of the domain. This is to delineate on a map the domain over which a index has been computed ... any quick answer welcome thanks -- _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E Dr. Nicolas Fauchereau post-doctoral fellow Oceanography Dept. University of Cape-Town Private Bag. 7701 Rondebosh Tel: 021 650 53 15 South Africa _/\/¯¯\/\_ 33º49'45.24"S & 18º28'45.60"E - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [Patch] Patch for fontmanager crash
Le Mer 17 juillet 2013 15:04, Michael Droettboom a écrit :
> This patch doesn't make a whole lot of sense to me. get_name should
> work just fine if self._family is None, and indeed it does in my own
> testing:
>
> ```
> from matplotlib import font_manager
>
> f = font_manager.FontProperties(None)
> print f._family
> print f.get_family()
> print f.get_name()
> ```
>
> So I'd much prefer to get to the bottom of the root cause of this
> problem than patch it unnecessarily in this way. Any idea what that is?
I haven't the faintest idea. The function seems to be called with a "None"
font, and then it crashes. As it's executed under a Linux system it uses
the fontconfig backend with cairo. The call only occurs when matplotlib is
fed more data than can be isolated in an simple example
Attaching the only patches Fedora/Red Hat applied before the build :
Patch0: %{name}-noagg.patch
Patch1: %{name}-tk.patch
# http://sourceforge.net/mailarchive/message.php?msg_id=30202451
# https://github.com/matplotlib/matplotlib/pull/1666
# https://bugzilla.redhat.com/show_bug.cgi?id=896182
Patch2: %{name}-fontconfig.patch
[…]
# Remove bundled libraries
rm -r agg24 lib/matplotlib/pyparsing_py?.py
# Remove references to bundled libraries
%patch0 -p1 -b .noagg
sed -i -e s/matplotlib\.pyparsing_py./pyparsing/g lib/matplotlib/*.py
# Correct tcl/tk detection
%patch1 -p1 -b .tk
sed -i -e 's|@@libdir@@|%{_libdir}|' setupext.py
# Use fontconfig by default
%patch2 -p1 -b .fontconfig
Regards,
--
Nicolas Mailhot
python-matplotlib-fontconfig.patch
Description: Binary data
python-matplotlib-noagg.patch
Description: Binary data
python-matplotlib-tk.patch
Description: Binary data
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Re: [Matplotlib-users] [Patch] Patch for fontmanager crash
Le Jeu 18 juillet 2013 14:12, Nicolas Mailhot a écrit :
> Le Mer 17 juillet 2013 15:04, Michael Droettboom a écrit :
>> This patch doesn't make a whole lot of sense to me. get_name should
>> work just fine if self._family is None, and indeed it does in my own
>> testing:
>>
>> ```
>> from matplotlib import font_manager
>>
>> f = font_manager.FontProperties(None)
>> print f._family
>> print f.get_family()
>> print f.get_name()
>> ```
>>
>> So I'd much prefer to get to the bottom of the root cause of this
>> problem than patch it unnecessarily in this way. Any idea what that is?
>
> I haven't the faintest idea. The function seems to be called with a "None"
> font, and then it crashes. As it's executed under a Linux system it uses
> the fontconfig backend with cairo. The call only occurs when matplotlib is
> fed more data than can be isolated in an simple example
>
> Attaching the only patches Fedora/Red Hat applied before the build :
>
> Patch0: %{name}-noagg.patch
> Patch1: %{name}-tk.patch
> # http://sourceforge.net/mailarchive/message.php?msg_id=30202451
> # https://github.com/matplotlib/matplotlib/pull/1666
> # https://bugzilla.redhat.com/show_bug.cgi?id=896182
> Patch2: %{name}-fontconfig.patch
>
> […]
>
> # Remove bundled libraries
> rm -r agg24 lib/matplotlib/pyparsing_py?.py
>
> # Remove references to bundled libraries
> %patch0 -p1 -b .noagg
> sed -i -e s/matplotlib\.pyparsing_py./pyparsing/g lib/matplotlib/*.py
>
> # Correct tcl/tk detection
> %patch1 -p1 -b .tk
> sed -i -e 's|@@libdir@@|%{_libdir}|' setupext.py
>
> # Use fontconfig by default
> %patch2 -p1 -b .fontconfig
BTW if you have some code to add to the crashing function to identify
what's wrong, I can reproduce the crash at will (though the processing
before crash time is rather long)
Regards,
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Re: [Matplotlib-users] Graph ticks label missing !
Le Mer 17 juillet 2013 14:56, Michael Droettboom a écrit : > Can you please provide a completely standalone example? The following > code has undefined variables etc. Here it is, I'm afraid this testcase intent is less clear than what I pasted previously (I replaced variables with precomputed values) As shown in the attached png, the bottom tick labels (month names) are missing. It worked in matplotlib ≤ 1.2.0 -- Nicolas Mailhot testcase.py Description: Binary data <>-- See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Graph ticks label missing !
Le Ven 19 juillet 2013 17:47, Nicolas Mailhot a écrit : > Le Mer 17 juillet 2013 14:56, Michael Droettboom a écrit : Hi, >> Can you please provide a completely standalone example? The following >> code has undefined variables etc. > > Here it is, I'm afraid this testcase intent is less clear than what I > pasted previously (I replaced variables with precomputed values) > > As shown in the attached png, the bottom tick labels (month names) are > missing. It worked in matplotlib ≤ 1.2.0 Can you confirm the example was good enough for identifying the problem or did I forget something again? Regards, -- Nicolas Mailhot -- Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Graph ticks label missing !
Le Lun 26 août 2013 18:21, Goyo a écrit : > 2013/7/19 Nicolas Mailhot : >> Le Mer 17 juillet 2013 14:56, Michael Droettboom a écrit : >>> Can you please provide a completely standalone example? The following >>> code has undefined variables etc. >> >> Here it is, I'm afraid this testcase intent is less clear than what I >> pasted previously (I replaced variables with precomputed values) >> >> As shown in the attached png, the bottom tick labels (month names) are >> missing. It worked in matplotlib ≤ 1.2.0 > > I can confirm the issue with 1.2.1 but it works with a recent > development version (output attached) so it must have been fixed at > some point. Thank you very much for the data point, I'll try to get 1.3.0 built on RHEL 6 Regards, -- Nicolas Mailhot -- Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Choosing optimal figure width/height automatically
Would something like this suit your needs ? import matplotlib.pyplot as plt # Image size width,height = 640,480 # Pixel border around image border = 1 dpi = 72.0 figsize= (width+2*border)/float(dpi), (height+2*border)/float(dpi) fig = plt.figure(figsize=figsize, dpi=dpi, facecolor="white") hpixel = 1.0/(width+2*border) vpixel = 1.0/(height+2*border) ax = fig.add_axes([border*hpixel, border*vpixel, 1-2*border*hpixel, 1-2*border*vpixel]) ax.set_xlim(0, width) ax.set_ylim(0, height) plt.show() Nicolas On Oct 17, 2013, at 4:16 PM, Christoph Groth wrote: > Benjamin Root writes: > >> I particularly like using the figaspect() function: >> >> (...) >> >> It isn't perfect, but for its simplicity, it gets it mostly right. > > Thanks, Benjamin, for your quick reply. > > Unfortunately, figaspect is only an approximate solution, as it simply > uses the aspect ration of the image for the whole figure (with axes and > labels). > > I wonder how difficult it would be to teach matplotlib to tightly fit > the axes around an image, and, ideally, output the figure cropped. > > > -- > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60135031&iu=/4140/ostg.clktrk > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135031&iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] 1. twinx and grid (garyr)
Hi Gary
To get more control on which grid shows / doesn't, you can do:
ax1.grid('on')
ax2.grid('off')
instead of:
plt.grid()
Nico
On 9/02/2014, at 5:34 pm, matplotlib-users-requ...@lists.sourceforge.net wrote:
> Message: 1
> Date: Sat, 8 Feb 2014 17:29:16 -0800
> From: "garyr"
> Subject: [Matplotlib-users] twinx and grid
> To:
> Message-ID: <4ADC6E5C7E0B41E48913F2C42408B5E6@owner59bf8d40c>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> The script below labels both the left and right x-axes and shows a grid. Is
> there a way to force the horizontal grid lines to line up with the tic marks
> on
> the left axis (ax1)?
>
> import numpy as np
> import matplotlib.pyplot as plt
> fig = plt.figure()
> ax1 = fig.add_subplot(111)
> t = np.arange(0.01, 10.0, 0.01)
> s1 = np.exp(t)
> ax1.plot(t, s1, 'b-')
> ax2 = ax1.twinx()
> s2 = np.sin(2*np.pi*t)
> ax2.plot(t, s2, 'r')
> plt.grid()
> plt.show()
>
>
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Re: [Matplotlib-users] Matplotlib for tiles - blank lines
If you do not draw at all (no pcolor call), do you still get transparent colors ? If yes, what is your .matplotlibrc ? Nicolas On 24 Mar 2014, at 11:49, Jesper Larsen wrote: > Thanks Pierre, > > from __future__ import division did not help me, I am using mpl 1.1.1rc. I > will try upgrading to a newer version of mpl and report back whether that > helps. My output is: > > [(511, (255, 255, 255, 0)), (65025, (0, 0, 128, 255))] > > Best regards, > Jesper > > > > 2014-03-24 11:27 GMT+01:00 Pierre Haessig : > Hi, > > Le 24/03/2014 10:45, Jesper Larsen a écrit : > > I am using matplotlib to produce plots (tiles) in a Web Map Service. > > Unfortunately I cannot get Matplotlib to plot on the entire image. > > There are one transparent (pixel) line at the bottom and one > > transparent line at the right. This is of course a problem when the > > tiles are shown in a map. Please see example below. Can anyone see > > what I am doing wrong? > I've run your code and got no transparent pixels. > > print im.getcolors() > [(65536, (0, 0, 128, 255))] > > I also tried with __future__ division to see if there was something with > figsize = w/dpi, h/dpi, but got the same output > > best, > Pierre > > (python 2.7 on Linux, mpl 1.3.1) > > > -- > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and their > applications. Written by three acclaimed leaders in the field, > this first edition is now available. Download your free book today! > http://p.sf.net/sfu/13534_NeoTech > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and their > applications. Written by three acclaimed leaders in the field, > this first edition is now available. Download your free book today! > http://p.sf.net/sfu/13534_NeoTech___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] creating colors for many plots
A colormap can be called like a function to get the colors associated to
(normalized) values. In your example, it is called with uniformly spaced values
(linspace) between 0 and 1. This should return the corresponding colors.
print plt.get_cmap('gray')(0.0)
(0.0, 0.0, 0.0, 1.0)
print plt.get_cmap('gray')(1.0)
(1.0, 1.0, 1.0, 1.0)
print plt.get_cmap('gray')(np.linspace(0,1,6))
[[ 0. 0. 0. 1. ]
[ 0.2 0.2 0.2 1. ]
[ 0.4 0.4 0.4 1. ]
[ 0.6 0.6 0.6 1. ]
[ 0.8 0.8 0.8 1. ]
[ 1. 1. 1. 1. ]]
Nicolas
On 08 May 2014, at 11:41, MaxMax wrote:
> i have found a solution for creating colors for many plots at this page:
> http://stackoverflow.com/questions/7513262/matplotlib-large-set-of-colors-for-plots
>
> what does this the following line do?
> colors = plt.get_cmap('jet')(np.linspace(0, 1.0, len(kinds)))
>
> plt.get_cmap('jet') gets a LinearSegmentedColormap object and np.linspace
> creates a ndarray
> but what happens because of this instruction?
>
>
>
> --
> View this message in context:
> http://matplotlib.1069221.n5.nabble.com/creating-colors-for-many-plots-tp43381.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
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[Matplotlib-users] 3D Bar (histogram) question
Hi, I compiled matplotlib svn revision 7246 yesterday to try the 3D stuff. >From mpl's website, an example for 3D bar plotting is shown[1]. I just don't understand the axes. From the code, shouldn't X values go from 0 to 20, instead of 0 to 400 000 like shown on the graph? Where does these values for the X and Z axes comes from (in the graph)? I'm trying my own 3D bar plot, with similar "weird" results. Could it be a bug? Thanx a lot. [1] http://matplotlib.sourceforge.net/examples/mplot3d/bars3d_demo.html -- Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/blackberry___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] How to get ticks "out" using mpl_toolkits.axes_grid.axislines ?
Hello,
I'm trying to get the ticks "out" in the following scripts using matplotlib
svn version. Any reason why it's not working ? Should I dig deeper in
mpl_toolkits ?
# -- Script 1
# modified from
http://matplotlib.sourceforge.net/examples/axes_grid/simple_axisline3.html
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid.axislines import Subplot
plt.rc("xtick", direction="out")
plt.rc("ytick", direction="out")
fig = plt.figure(1, (3,3))
ax = Subplot(fig, 111)
fig.add_subplot(ax)
ax.axis["right"].set_visible(False)
ax.axis["top"].set_visible(False)
plt.show()
# -- EOF
# -- Script 2
# modified from
http://matplotlib.sourceforge.net/examples/axes_grid/simple_axisline2.html
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid.axislines import SubplotZero
import numpy as np
*plt.rc("xtick", direction="out")
plt.rc("ytick", direction="out")
*
fig = plt.figure(1, (4,3))
# a subplot with two additiona axis, "xzero" and "yzero". "xzero" is
# y=0 line, and "yzero" is x=0 line.
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
# make xzero axis (horizontal axis line through y=0) visible.
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_text("Axis Zero")
# make other axis (bottom, top, right) invisible.
for n in ["bottom", "top", "right"]:
ax.axis[n].set_visible(False)
xx = np.arange(0, 2*np.pi, 0.01)
ax.plot(xx, np.sin(xx))
plt.show()
# -- EOF
Thanks for your help.
Best regards,
--
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Ph.D. Candidate, Brain & Computer Sciences
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http://web.mit.edu/pinto
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Re: [Matplotlib-users] How to get ticks "out" using mpl_toolkits.axes_grid.axislines ?
Thanks Jae-Joon, it's working now. And thanks for pointing me to "spine",
that's exactly what I was looking for!
Cheers,
N
On Thu, Jul 23, 2009 at 6:40 PM, Jae-Joon Lee wrote:
> Hi,
>
> Thanks for reporting this.
> The axes class in axes_grid toolkits uses different artists to render
> ticks and ticklabels. And some of the features in the original
> matplotlib won't work correctly, and the "tick direction" turned out
> to be one of them.
>
> However, I just committed a fix for this to the svn (r7292), so it
> should work now.
> So, please install mpl from the current svn again, and test it.
> Unfortunately, while the ticks are rotated, the pad for tick labels
> are not automatically adjusted.
> Therefore, you may want to adjust it manually. e.g.,
>
> ax.axis["left"].major_tick_pad = 10
>
> I'll try to improve this in the future.
>
> On the other hand, you may take a look at the recently added "spine"
> support in the main matplotlib.
>
>
> http://matplotlib.sourceforge.net/examples/pylab_examples/spine_placement_demo.html
>
> If you use spine, than all the ticks & ticklabels feature in mpl will work.
>
> Regards,
>
> -JJ
>
>
> On Thu, Jul 23, 2009 at 3:23 PM, Nicolas Pinto
> wrote:
> > Hello,
> >
> > I'm trying to get the ticks "out" in the following scripts using
> matplotlib
> > svn version. Any reason why it's not working ? Should I dig deeper in
> > mpl_toolkits ?
> >
> > # -- Script 1
> > # modified from
> >
> http://matplotlib.sourceforge.net/examples/axes_grid/simple_axisline3.html
> > import matplotlib.pyplot as plt
> > from mpl_toolkits.axes_grid.axislines import Subplot
> >
> > plt.rc("xtick", direction="out")
> > plt.rc("ytick", direction="out")
> >
> > fig = plt.figure(1, (3,3))
> >
> > ax = Subplot(fig, 111)
> > fig.add_subplot(ax)
> >
> > ax.axis["right"].set_visible(False)
> > ax.axis["top"].set_visible(False)
> >
> > plt.show()
> >
> > # -- EOF
> >
> > # -- Script 2
> > # modified from
> >
> http://matplotlib.sourceforge.net/examples/axes_grid/simple_axisline2.html
> >
> > import matplotlib.pyplot as plt
> > from mpl_toolkits.axes_grid.axislines import SubplotZero
> > import numpy as np
> >
> > plt.rc("xtick", direction="out")
> > plt.rc("ytick", direction="out")
> >
> > fig = plt.figure(1, (4,3))
> >
> > # a subplot with two additiona axis, "xzero" and "yzero". "xzero" is
> > # y=0 line, and "yzero" is x=0 line.
> > ax = SubplotZero(fig, 1, 1, 1)
> > fig.add_subplot(ax)
> >
> > # make xzero axis (horizontal axis line through y=0) visible.
> > ax.axis["xzero"].set_visible(True)
> > ax.axis["xzero"].label.set_text("Axis Zero")
> >
> > # make other axis (bottom, top, right) invisible.
> > for n in ["bottom", "top", "right"]:
> > ax.axis[n].set_visible(False)
> >
> > xx = np.arange(0, 2*np.pi, 0.01)
> > ax.plot(xx, np.sin(xx))
> >
> > plt.show()
> >
> > # -- EOF
> >
> > Thanks for your help.
> >
> > Best regards,
> >
> > --
> > Nicolas Pinto
> > Ph.D. Candidate, Brain & Computer Sciences
> > Massachusetts Institute of Technology, USA
> > http://web.mit.edu/pinto
> >
> >
> --
> >
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> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> >
> >
>
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http://web.mit.edu/pinto
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[Matplotlib-users] Using spines and set_yscale
Hello,
In the following code (using matplotlib svn), I'm trying to set the left
(log) axis "outward" using spines. Subplots 222 and 223 have "weird"
behaviors. Am I using the API incorrectly? I got it to work by calling
ax.set_yscale('log') twice (subplot 224). Where should I start if I want to
contribute a patch?
import matplotlib.pyplot as plt
plt.rcParams["xtick.direction"] = "out"
plt.rcParams["ytick.direction"] = "out"
x = [.5, 111,68, 192, 340, 325]
fig = plt.figure()
ax = fig.add_subplot(221)
ax.set_yscale('log')
ax.bar(range(len(x)), x, align='center')
ax = fig.add_subplot(222)
ax.set_yscale('log')
ax.bar(range(len(x)), x, align='center')
ax.spines["left"].set_position(("outward", 10))
ax = fig.add_subplot(223)
ax.bar(range(len(x)), x, align='center')
ax.spines["left"].set_position(("outward", 10))
ax.set_yscale('log')
ax = fig.add_subplot(224)
ax.set_yscale('log')
ax.bar(range(len(x)), x, align='center')
ax.spines["left"].set_position(("outward", 10))
ax.set_yscale('log')
plt.show()
# EOF
Thanks for your help.
Best regards,
--
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Ph.D. Candidate, Brain & Computer Sciences
Massachusetts Institute of Technology, USA
http://web.mit.edu/pinto
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Re: [Matplotlib-users] FYI, typo
Hey guys, I found another typo here: http://matplotlib.sourceforge.net/api/axes_api.html?highlight=legend#matplotlib.axes.Axes.get_legend_handles_labels -equibalent +equivalent Cheers, N On Fri, Aug 21, 2009 at 8:29 PM, marc desmarais wrote: > This sentence is missing "to" or "and" I think: > > "These helper methods will take your data (eg. numpy arrays and strings) > create primitive ... > > Is in at http://matplotlib.sourceforge.net/users/artists.html > > Marc Desmarais > Long Beach, CA > > > > -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- Nicolas Pinto Ph.D. Candidate, Brain & Computer Sciences Massachusetts Institute of Technology, USA http://web.mit.edu/pinto -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] mplot3D plot_surface colors
Its great news that the 3D is receiving more polish :) After reading on wikipedia, wouldn't it be nicier to have Phong reflection[1] instead of Gouraud? Maybe it would be too hard, as the Gouraud seems to be implemented directly in Agg (from what others just said...) Anyway, just a suggestion ;) [1] http://en.wikipedia.org/wiki/Phong_reflection_model 2009/8/26 Eric Firing > Reinier Heeres wrote: > > Hi JJ, > > > > Thanks for the examples! I indeed suspected the anti-aliasing as well. > > I'll include an option for linecolors = facecolors soon (probably this > > weekend); it seems to be a good solution. > > No, not in general. There are two problems: it distorts the sizes and > positions of the patches, very slightly, but enough that it might be a > problem in some applications; and it does not work with alpha != 1. > > Eric > > > -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] how to update plots fast
Have you read these? http://www.scipy.org/Cookbook/Matplotlib/Animations http://matplotlib.sourceforge.net/examples/animation/index.html?highlight=animation What I normally do is plot everything (forget about interactive mode, its just too slow) and get handles to curves, then update the curves values. With this you don't need to redraw _everything_ each time you add a new element. I remember reading a page about animation and backends, but I can't find it anymore, maybe the previous links can help you. Good luck 2009/9/2 RazAlon > > Hi, > > I wish to have several (about 3) plots which are updated about once per > second, as part of some application that's monitoring an instrument. > > I set pyplot to interactive mode. I create as many figures as I need, and > then I simply plot to them whenever I have new data coming in (each time I > plot a new x and y vectors, I don't know if it's possible just to append > data points to existing plots). > > I work on windows xp with the default matplotlib settings. > > This procedure is very slow. The plots take ages to update. > > Is there a faster way to do that? > > Thank you, > Raz > > > > -- > View this message in context: > http://www.nabble.com/how-to-update-plots-fast-tp25252745p25252745.html > Sent from the matplotlib - users mailing list archive at Nabble.com. > > > > -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Fwd: best format for MS word?
I'm sure everybody find this really sad... If he wants control over the ploting capabilities, then why not have matplotlib and send him the script?I know when I switched to matplotlib from matlab I wanted to be able to edit directly the graph with point and click, but sometimes it is more powerful or even easier to edit the script. If the changes are really small, you could always send him an SVG that he edits in Inkscape. I do that sometimes. There might be other open source plotting packages which are WYSIWYG, like qtiplot. Please, please! don't go with excel ;) Its quality is so much lower then any other software. 2009/9/3 Shixin Zeng > Forgot CC list. > > Thanks for your helps. > > Best Regards > > Shixin Zeng > > > > > -- Forwarded message -- > From: Shixin Zeng > Date: Wed, Sep 2, 2009 at 11:02 PM > Subject: Re: [Matplotlib-users] best format for MS word? > To: Stan West > > > On Wed, Sep 2, 2009 at 8:59 PM, Stan West wrote: > >> -Original Message- > >> From: Shixin Zeng [mailto:zeng.shi...@gmail.com] > >> Sent: Wednesday, September 02, 2009 16:11 > >> > >> While for embeding eps files in word, I've just tried that. MS word > >> 2007 seems to have some problem on this. See the attached eps > >> file produced from matplotlib. In MS word 2007, the labels > >> and titles of axes are gone, even on the printed version of > >> the word file. It's there when I view/print it with gsview. > > > > I don't have Word 2007, but I imported your file into Word 2003 and saw > that > > the titles and labels were missing. I would blame that on shortcomings > of the > > Word PS engine. When I printed to a non-PostScript printer, the titles > and > > labels were missing as in your test; that doesn't surprise me, because > the > > Word PS engine would be used to render for a non-PS printer. However, > when I > > printed to PostScript devices (the Adobe PDF driver and the PDFCreator > > driver), the titles and text were present; Word shouldn't invoke its PS > engine > > when the printer understands PS. Is there any chance that you were using > a > > non-PS printer, or that your printer has two or more modes (like the > > Hewlett-Packard models that automatically switch between PCL and PS) and > you > > were not using a PS driver? How about testing with PDFCreator? > > > > > I'm not sure if my printer supports PS or not, it's Dell Laser 1320c, > I couldn't find any information from its property page. > > I'm afraid that I'm giving up matplotlib for my paper plotting, since > my professor wants me to do plotting with excel such that he doesn't > have to ask me to do every small change on the plot if he could do it > himself. > > > -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] making quicktime animations from linux
I produce all my movies in Ogg container + Theora compression. I use ffmpeg2theora for that, available on all platforms:ffmpeg2theora --nosound --optimize --width 1024 --height 768 --inputfps=15 --aspect 4:3 png/mov%04d.png -o movie.ogv 2009/9/3 Andrew Straw > I use:: > > ffmpeg -r 60 -i frame%05d.png -vcodec wmv2 -b 2000k out.avi > > And this works well to generate movies that play on Windows, Mac and > Linux. As a bonus, these movies can be included in Latex/Beamer output > using the movies15 package and played within the PDF via Adobe Reader on > Mac and Windows. (I'm sure it's just a matter of time before the linux > PDF readers can do this, too.) Finally I feel I am near a an end to my > cross-platform, doesn't-suck presentation-with-movies quest. I only wish > the movie format required to make this possible was less license and > patent encumbered... > > I have been encoding on Ubuntu Jaunty with libraries from mediabuntu. I > haven't tested the above using the plain Ubuntu ffmpeg yet. > > -Andrew > > Philip Austin wrote: > > This isn't strictly a matplotlib question, but I'm hoping > > dual mac/linux users can provide some advice on converting png > > files to quicktime movies using mencoder on Ubuntu or Centos. > > So far I've found that > > > > 1) starting with > > http://matplotlib.sourceforge.net/examples/animation/movie_demo.html > > using > > > > mencoder mf://*.png -mf type=png:w=800:h=600:fps=25\ > > -ovc lavc -lavcopts vcodec=mpeg4 -oac copy -o output.avi > > > > produces an avi file that works with Ubuntu/mplayer, but > > fails with Windows Media Player. > > > > 2) changing the codec based on > http://pymolwiki.org/index.php/Making_Movies > > > > mencoder -mc 0 -noskip -skiplimit 0 -ovc lavc -lavcopts > > vcodec=msmpeg4v2:vhq "mf://*.png" -mf type=png:fps=18 -o output.avi > > > > works with mplayer and windows media player, but won't play > > on macs (unless they install vlc). > > When I try to convert the avi file to quicktime using > > > >> h264enc -2p -p qt > >> > > and accepting all defaults > > it makes it through both passes, gets to > > "converting avi file to mp4 container" > > and exits the "-> Failed!" > > > > Any pointers appreciated. I'm open to any linux based > > solution that produces animations > > that can be be viewed on all three platforms -- thanks, Phil > > > > > > > > > > > -- > > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 > 30-Day > > trial. Simplify your report design, integration and deployment - and > focus on > > what you do best, core application coding. Discover what's new with > > Crystal Reports now. http://p.sf.net/sfu/bobj-july > > ___ > > Matplotlib-users mailing list > > Matplotlib-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > > > > -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] funny bug with greek letters
Hi list,
when I do:
hist(randn(100)); xlabel('$\gamma$')
things work as expected.
However, if I try:
hist(randn(100)); xlabel('$\beta$')
then either I get an error, or I get the label "eta" under the plot.
Other letters seem to trigger this: tau, alpha, rho, maybe others.
This problems wether text.usetex is set to True or not (in matplolibrc file).
Version: 0.98.5.2 (Ubuntu Jaunty, ipython 0.9.1 shell).
Has anyone had the same problem, and is there any fix?
Sorry if this has been reported before, I tried to find it, but
nothing came out.
Thanks in advance
--
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Re: [Matplotlib-users] funny bug with greek letters
thanks a lot! I did not know about raw strings, sorry, even Python has
its black corners, I guess.
funny \gamma works, though.
On a related note, usetex=True is fancy, but produce much bigger eps
files for me, so I stick with the standard mathtex rendering.
Thanks again
Nicolas
2009/9/4 Nicolas Chopin :
> Hi list,
> when I do:
> hist(randn(100)); xlabel('$\gamma$')
> things work as expected.
> However, if I try:
> hist(randn(100)); xlabel('$\beta$')
> then either I get an error, or I get the label "eta" under the plot.
> Other letters seem to trigger this: tau, alpha, rho, maybe others.
> This problems wether text.usetex is set to True or not (in matplolibrc file).
>
> Version: 0.98.5.2 (Ubuntu Jaunty, ipython 0.9.1 shell).
>
> Has anyone had the same problem, and is there any fix?
> Sorry if this has been reported before, I tried to find it, but
> nothing came out.
>
> Thanks in advance
>
> --
>
> Nicolas Chopin
> ENSAE
> 3, Avenue Pierre Larousse
> 92245 Malakoff CEDEX
> FRANCE
> tel +33 1 41 17 65 22 | fax +33 1 41 17 38 52
> http://www.crest.fr/pageperso/Nicolas.Chopin/Nicolas.Chopin.htm
>
--
Nicolas Chopin
ENSAE
3, Avenue Pierre Larousse
92245 Malakoff CEDEX
FRANCE
tel +33 1 41 17 65 22 | fax +33 1 41 17 38 52
http://www.crest.fr/pageperso/Nicolas.Chopin/Nicolas.Chopin.htm
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Re: [Matplotlib-users] making quicktime animations from linux -- summary
Thats good information to have gathered! It sure will be usefull. Have you look into the new html5's video tag? You can directly embed ogg in a page, without flash or any other plugin. Firefox 3.5 supports that, I think Safari would work too. See this page for information (and look up the source) http://www.mozilla.com/en-US/firefox/video/ 2009/9/5 Jouni K. Seppänen > Phil Austin writes: > > > http://clouds.eos.ubc.ca/~phil/video/samples/movie.ogv > > size: 0.33 Mbytes (!) > > note: we followed the install instructions at > > http://www.theora.org/downloads/ > >but Safari didn't recognize the ogv suffix, and didn't > >offer to associate it with a player > > Your web server claims this to be a text file: > Content-Type: text/plain; charset=UTF-8 > > If you put something like > AddType video/ogg .ogv > in a relevant Apache configuration file, browsers may have a better > chance of identifying the file type. > > -- > Jouni K. Seppänen > http://www.iki.fi/jks > > > > -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] mplot3d bars3d demo
I have reported that issue on the tracker at the end of July. You can fin dit here: http://sourceforge.net/tracker/?func=detail&atid=560720&aid=2830483&group_id=80706 It's supposed to be fixed in 0.99... are you sure you are using it? I remember trying it just after the bug was closed with an svn version and it was working. But then again I just tried it (0.99.0) and I get the bad behaviour... You seem not to be the only one! Maybe the issue should be re-opened. 2009/9/16 Sammy Yu > Hi, > I've been playing around with mplotlib's 3d charting functionality. > I wanted to generate something similar to this example: > > http://matplotlib.sourceforge.net/plot_directive/mpl_examples/mplot3d/bars3d_demo.py > > However, the number on scales are off (see attached). It should look like > this: > http://matplotlib.sourceforge.net/_images/bars3d_demo.png > > I'm running matplotlib-0.99.0. Is this a known issue? > > Thanks, > Sammy > > > -- > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] glumpy: fast OpenGL numpy visualization + matplotlib integration
Hi all, glumpy is a fast OpenGL visualization tool for numpy arrays coded on top of pyglet (http://www.pyglet.org/). The package contains many demos showing basic usage as well as integration with matplotlib. As a reference, the animation script available from matplotlib distribution runs at around 500 fps using glumpy instead of 30 fps on my machine. Package/screenshots/explanations at: http://www.loria.fr/~rougier/coding/glumpy.html (it does not require installation so you can run demos from within the glumpy directory). Nicolas -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [Numpy-discussion] glumpy: fast OpenGL numpy visualization + matplotlib integration
Well, I've been starting working on a pyglet backend but it is currently painfully slow mainly because I do not know enough of the matplotlib internal machinery to really benefit from it. In the case of glumpy, the use of texture object for representing 2d arrays is a real speed boost since interpolation/colormap/heightmap is made on the GPU. Concerning matplotlib examples, the use of glumpy should be actually two lines of code: from pylab import * from glumpy import imshow, show but I did not package it this way yet (that is easy however). I guess the main question is whether people are interested in glumpy to have a quick & dirty "debug" tool on top of matplotlib or whether they prefer a full fledged and fast pyglet/OpenGL backend (which is really harder). Nicolas On 28 Sep, 2009, at 18:05 , Gökhan Sever wrote: On Mon, Sep 28, 2009 at 9:06 AM, Nicolas Rougier > wrote: Hi all, glumpy is a fast OpenGL visualization tool for numpy arrays coded on top of pyglet (http://www.pyglet.org/). The package contains many demos showing basic usage as well as integration with matplotlib. As a reference, the animation script available from matplotlib distribution runs at around 500 fps using glumpy instead of 30 fps on my machine. Package/screenshots/explanations at: http://www.loria.fr/~rougier/coding/glumpy.html (it does not require installation so you can run demos from within the glumpy directory). Nicolas ___ NumPy-Discussion mailing list numpy-discuss...@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion Hi Nicolas, This is technically called OpenGL backend, isn't it? It is nice that integrates with matplotlib, however 300 hundred lines of code indeed a lot of lines for an ordinary user. Do you think this could be further integrated into matplotlib with a wrapper to simplify its usage? -- Gökhan -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Subplots, multiple bar3d plots + titling
I'm not sure its possible right now to do subplots with 3D.
As for the title, I cannot either put titles on any 3D graphs...
2009/9/28
> Greetings,
>
> I would like to plot to make a figure with 3 subplots
> of the form (221) to (223):
> - each subplot should show a bar3d plot of a matrix
> - each subplot should have it's own title
>
> The problems:
> a) I don't see (nor did i find something) how i can
>use subplots combined with bar3d (from the mpl_toolkits.mplot3d)
>package.
>
> b) I don't manage to give the 3d bar plot a title. In the attached
>code you will see that a title is set, but it does not show
>up in the figure
>
> Could someone please help me out with these problems?
>
> Thanks,
> q
>
> -
>
> The code for the basic plot of the matrix:
>
>
> from mpl_toolkits.mplot3d import Axes3D
> import matplotlib.pyplot as plt
> from matplotlib.ticker import FixedFormatter, LinearLocator, FixedLocator
> from numpy import *
>
> psi=1/sqrt(2)*array([1, 0, 0, 1])
> rho=outer(psi,psi)
>
> fig = plt.figure()
>
> ax = Axes3D(fig)
>
> elements = (len(rho) * len(rho))
> xpos, ypos = meshgrid(array(range(len(rho)))+0.25,
> array(range(len(rho)))+0.25)
>
> xpos = xpos.flatten()
> ypos = ypos.flatten()
> zpos = zeros(elements)
>
> dx = 0.5 * ones_like(zpos)
> dy = dx.copy()
> dz = absolute(rho.flatten())
>
> ax.set_title('absolute')
>
> ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color='#F8F800')
>
> plt.show()
>
>
>
>
> --
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> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9-12, 2009. Register now!
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Re: [Matplotlib-users] Axes3D - size of the Z axe
I was looking for something similar. It seems Axes3D() takes the angle as argument: import matplotlib.pyplot as plt import mpl_toolkits.mplot3d as m3d fig = plt.figure() ax = m3d.Axes3D(fig, elev = 20.0, azim = 45) in degrees. 2009/10/2 German Ocampo > Hello > > After search in google, I found a solution changing the initial point > of view of the plot, using a function which control the angle and > elevation of the initial view: > > ax.view_init(elevation, azimuth) and tried and works > > ax = Axes3D(fig) > ax.view_init(64, -30) > > Question: Is it possible to include this function in the Axes3D > documentation web page? or where I could find it in the webpage? > > > http://matplotlib.sourceforge.net/mpl_toolkits/mplot3d/api.html?highlight=axes3d#module-mpl_toolkits.mplot3d.axes3d > > Thanks > > German > > > On Fri, Oct 2, 2009 at 1:24 PM, German Ocampo wrote: > > Hello everybody > > > > How can I control the size of the Z axis in a 3D plot using Axes3D in > > matplotlib? > > > > regards > > > > german > > > > > -- > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] mplot3d: plot_surface() and contour on grid?
Thanx all, Can it be used to do a projection not only on the xoy axis but also on the xoz and yoz? N 2009/10/9 Andrew Straw > Matthias Michler wrote: > > Hello list, > > > > I'm not an expert in axes3d, but in case the feature which Nicolas > requested > > is not possible in an easy manner up to now, I propose an additional > kwarg > > for axes3d.Axes3D.contour. Something like *offset*. If offset is None the > > z-values of the contour lines corresponds to given Z and otherwise offset > is > > used for the z-values of the contour lines. > > I attached a changed axes3d.py and a patch against current svn. The > result is > > illustrated in the contour3d_demo.png. > > > > Could any of the experts have a look at it and tell me if this could be > > useful, please? > > > > Thanks in advance for any comments. > > > > Kind regards > > Matthias > > > > On Wednesday 30 September 2009 19:22:42 Nicolas Bigaouette wrote: > > > >> Hi, > >> I have a nice plot_surface() using mplot3d (see attachement). > >> > >> I'd like to project the surface on the axis xoy, xoz and yoz with a > >> contour, similar to this figure: > >> http://homepages.ulb.ac.be/~dgonze/INFO/matlab/fig19.jpg<http://homepages.ulb.ac.be/%7Edgonze/INFO/matlab/fig19.jpg> > >> > >> Is it possible using matplotlib and mplot3d? > >> > >> Thanx! > >> > > > > > Hi Matthias, > > I committed your patch to a github branch of MPL, but I'll let Reinier > actually commit something based on this to MPL. > http://github.com/astraw/matplotlib/tree/dev/michler-3d-contourf-offsets > > -Andrew > > > -- > Come build with us! The BlackBerry(R) Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9 - 12, 2009. Register now! > http://p.sf.net/sfu/devconference > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] mplot3d: plot_surface() and contour on grid?
Wonderful! Thanx a lot ;) 2009/12/11 > Reinier, > > This in incredible. Wow. Thanks for all of your hard work. > > Cheers, > -paul > > > -Original Message- > > From: Reinier Heeres [mailto:rein...@heeres.eu] > > Sent: Thursday, December 10, 2009 3:37 PM > > To: Matthias Michler > > Cc: matplotlib-users@lists.sourceforge.net > > Subject: Re: [Matplotlib-users] mplot3d: plot_surface() and contour on > > grid? > > > > Hi, > > > > I just committed a patch to do this in svn, also allowing for contour > > lines along other directions. > > > > See the attached image for an example. > > > > -- > Return on Information: > Google Enterprise Search pays you back > Get the facts. > http://p.sf.net/sfu/google-dev2dev > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Qt4Agg backend and SIGINT (ctrl+c)
Hi, I cannot kill a plot by "ctrl+c" in a terminal (sending the SIGINT) when using the Qt4Agg backend. When using GTKAgg it works fine... What could be wrong? I need that. Thanx! -- Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] GTK pylab console
Hi all, I've developed a GTK/Python/Pylab console that is able to display most matplotlib figures directly within the console and handle matplotlib mouse events properly. Screenshots and sources are available at: http://www.loria.fr/~rougier/pylab.html I've tested several examples from matplotlib examples and they seem to be displayed properly. Any comments/requests are welcome. Nicolas Rougier. - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] GTK pylab console
Thanks. I've stumbled across "reinteract" and found that the inline plot has been done using the previous version of the pylab console (http://blog.fishsoup.net/2007/11/10/reinteract-better-interactive-python/) Concerning ipython, I've once designed the code to integrate it but since then I got a bit lost with the future new version of ipython (ipython1). I will try to look again. Nicolas On Fri, 2008-06-27 at 09:29 -0400, Michael Droettboom wrote: > Very nice. I like the idea of inline plots -- less of an interrupted flow. > > Have you looked at the similar project "reinteract"? > (www.reinteract.org) It's a little more aggressively different, for > what it's worth. The author seems to have lost steam in the last few > months, but it has some interesting ideas. > > It would be neat to integrate ipython, rather than just the standard > python shell, into your console to get autocompletion, fancier help > etc. I think the combination could be great. > > Thanks for sharing this, and keep us updated! > > Cheers, > Mike > > Nicolas Rougier wrote: > > Hi all, > > > > I've developed a GTK/Python/Pylab console that is able to display > > most matplotlib figures directly within the console and handle > > matplotlib mouse events properly. > > > > > > Screenshots and sources are available at: > > http://www.loria.fr/~rougier/pylab.html > > > > > > I've tested several examples from matplotlib examples and they > > seem to be displayed properly. Any comments/requests are welcome. > > > > > > Nicolas Rougier. > > > > > > - > > Check out the new SourceForge.net Marketplace. > > It's the best place to buy or sell services for > > just about anything Open Source. > > http://sourceforge.net/services/buy/index.php > > ___ > > Matplotlib-users mailing list > > Matplotlib-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Problem with loglog and ls='steps'
Hi, I have a problem with the loglog function with ls='steps' (matplotlib version: 0.98.3). When I try to plot arrays with loglog(x,y,ls='steps'), nothing is drawn whereas loglog(x,y) and plot(x,y,ls='steps'): x=[10.,20.,30.,40.,50.] y=[0.09,0.02,0.02,0.03,0.01] pylab.loglog(x,y) #it works pylab.loglog(x,y,ls='steps') #nothing is drawn... pylab.plot(x,y,ls='steps') #it works Is there something I can do to use loglog with ls='steps'? thanks in advance, Nicolas - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Simple 3D support
Hi all, I've been working lately on 3d visualization for my own need and maybe the result may have some interest for some of you. I know there is already mlab/mayavi2/vtk that does a great job, but after having spent a lot of time trying to install all requirements, I headed for a very fast, simple and dedicated solution. Currently, scigl (this is the name of the framework) dependencies are restricted to OpenGL, GLUT, GLEW and Boost (for python export). You can find a beta version at http://www.loria.fr/~rougier/scigl/index.html and the mandatory screenshots are available at http://www.loria.fr/~rougier/scigl/screenshots.html . Nicolas - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Simple 3D support
I tried installing mayavi on macos some months ago but I do not remember exactly what were the problems. I know that I ended recompiling vtk from sources and it did not work for some reason. The EPD bundle did not work because (I think) of some conflicts between installed python version (macpython and python from darwin ports) and the egg did not compile at all. I tried today the last EPD on a fresh leopard install and it seems to be working now. Nicolas On Fri, 2008-11-28 at 05:14 -0800, Lou Pecora wrote: > This looks interesting. What platform are you using? How hard was the > installation and what problems, if any, did you run into? And their fixes? > Thanks for the info. > > -- Lou Pecora, my views are my own. > > > --- On Thu, 11/27/08, Nicolas Rougier <[EMAIL PROTECTED]> wrote: > > > From: Nicolas Rougier <[EMAIL PROTECTED]> > > Subject: [Matplotlib-users] Simple 3D support > > To: matplotlib-users@lists.sourceforge.net > > Date: Thursday, November 27, 2008, 3:36 PM > > Hi all, > > > > I've been working lately on 3d visualization for my own > > need and maybe > > the result may have some interest for some of you. I know > > there is > > already mlab/mayavi2/vtk that does a great job, but after > > having spent > > a lot of time trying to install all requirements, I headed > > for a very > > fast, simple and dedicated solution. Currently, scigl (this > > is the > > name of the framework) dependencies are restricted to > > OpenGL, GLUT, > > GLEW and Boost (for python export). > > > > You can find a beta version at > > http://www.loria.fr/~rougier/scigl/index.html > > and the mandatory screenshots are available at > > http://www.loria.fr/~rougier/scigl/screenshots.html > > . > > > > > > Nicolas > > > > > > > > > > > > - > > This SF.Net email is sponsored by the Moblin Your Move > > Developer's challenge > > Build the coolest Linux based applications with Moblin SDK > > & win great prizes > > Grand prize is a trip for two to an Open Source event > > anywhere in the world > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > ___ > > Matplotlib-users mailing list > > Matplotlib-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] fill_between a plot with gradient
Hi all,
I'm using plot(x,y) and fill_between(x,y) to make a graphic flat plot
I'd like to create a fill_between with a gradient color like this
geen/yellow plot in example :
http://oss.oetiker.ch/rrdtool/gallery/fsu_predict.png
I have seen that fill_between() have cmap = , is it a good way to do ?
How to have a gradient from 0 to the y ?
Or how to have a gradient from 0 to max(y) ?
Thank you,
Nicolas Vergnes
...
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[Matplotlib-users] computer modern
Hi,
is there any way to use Computer Modern in any text in matplotlib ?
In http://matplotlib.sourceforge.net/users/customizing.html, I read the
following :
#font.serif : Bitstream Vera Serif, New Century Schoolbook, Century
Schoolbook L, Utopia, ITC Bookman, Bookman, Nimbus Roman No9 L, Times New
Roman, Times, Palatino, Charter, serif
#font.sans-serif : Bitstream Vera Sans, Lucida Grande, Verdana, Geneva,
Lucid, Arial, Helvetica, Avant Garde, sans-serif
#font.cursive: Apple Chancery, Textile, Zapf Chancery, Sand, cursive
#font.fantasy: Comic Sans MS, Chicago, Charcoal, Impact, Western,
fantasy
#font.monospace : Bitstream Vera Sans Mono, Andale Mono, Nimbus Mono L,
Courier New, Courier, Fixed, Terminal, monospace
So, Computer Modern is not listed there.
However, Computer Modern is used in mathtext, so I suppose there is a
way to use it also in plain text, but I can't figure it...
I tried :
/mpl.rc('font', family = 'serif', serif = 'computer modern roman')/
but it did not work.
Thanks a lot,
Nicolas P.
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[Matplotlib-users] mathtext : overrightarrow
Hi,
is there any way to display a big arrow on a vector using mathtext, like
"$\overrightarrow{AB}$" ?
If not, is there any plan to implement it in a next release ?
Thanks a lot,
Nicolas P.
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Re: [Matplotlib-users] mathtext : overrightarrow
Thanks for your answer.
Michael Droettboom a écrit :
> Handling this like an accent is trivial, and handled with the patch
> below (which I will commit to SVN).
It is however not so much useful, since \vec does already the job.
> Handling this in such a way that the length of the arrow changes based
> on the size of the underlying text is less straightforward and will
> take some time to implement.
This is what I meant, yes.
Hope you will success, I miss it quite a lot for now.
Thanks again,
Nicolas
> Cheers,
> Mike
>
> Index: lib/matplotlib/mathtext.py
> ===
> --- lib/matplotlib/mathtext.py(revision 7148)
> +++ lib/matplotlib/mathtext.py(working copy)
> @@ -2445,7 +2445,9 @@
> r"'" : r'\combiningacuteaccent',
> r'~' : r'\combiningtilde',
> r'.' : r'\combiningdotabove',
> -r'^' : r'\circumflexaccent'
> +r'^' : r'\circumflexaccent',
> + r'overrightarrow' : r'\rightarrow',
> +r'overleftarrow' : r'\leftarrow'
> }
>
> _wide_accents = set(r"widehat widetilde".split())
>
> Nicolas Pourcelot wrote:
>> Hi,
>>
>> is there any way to display a big arrow on a vector using mathtext,
>> like "$\overrightarrow{AB}$" ?
>>
>> If not, is there any plan to implement it in a next release ?
>>
>> Thanks a lot,
>>
>> Nicolas P.
>>
>> --
>>
>>
>> Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT
>> is a gathering of tech-side developers & brand creativity
>> professionals. Meet
>> the minds behind Google Creative Lab, Visual Complexity, Processing,
>> & iPhoneDevCamp as they present alongside digital heavyweights like
>> Barbarian Group, R/GA, & Big Spaceship.
>> http://p.sf.net/sfu/creativitycat-com
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>
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Re: [Matplotlib-users] computer modern
Thanks, it works well.
However, I forgot that computer modern does not include accented
characters (unlike latin modern), so I eventually used Stix :
mpl.rc('font', family = 'serif', serif = 'STIXGeneral')
By the way, is there any way to use Stix for sans-serif as well, or even
cursive and monospace ? I don't know how to do that, since Stix seems to
contain all of them in a single file (STIXGeneral.ttf) ?
Nicolas
Michael Droettboom a écrit :
> The name of the Computer Modern Roman font that ships with matplotlib
> is "cmr10", so
>
> mpl.rc('font', family = 'serif', serif = 'cmr10')
>
> should work.
>
> Mike
>
> Nicolas Pourcelot wrote:
>> Hi,
>>
>> is there any way to use Computer Modern in any text in matplotlib ?
>>
>> In http://matplotlib.sourceforge.net/users/customizing.html, I read
>> the following :
>>
>> #font.serif : Bitstream Vera Serif, New Century Schoolbook,
>> Century Schoolbook L, Utopia, ITC Bookman, Bookman, Nimbus Roman No9
>> L, Times New Roman, Times, Palatino, Charter, serif
>> #font.sans-serif : Bitstream Vera Sans, Lucida Grande, Verdana,
>> Geneva, Lucid, Arial, Helvetica, Avant Garde, sans-serif
>> #font.cursive: Apple Chancery, Textile, Zapf Chancery, Sand,
>> cursive
>> #font.fantasy: Comic Sans MS, Chicago, Charcoal, Impact,
>> Western, fantasy
>> #font.monospace : Bitstream Vera Sans Mono, Andale Mono, Nimbus
>> Mono L, Courier New, Courier, Fixed, Terminal, monospace
>> So, Computer Modern is not listed there.
>>
>> However, Computer Modern is used in mathtext, so I suppose there is a
>> way to use it also in plain text, but I can't figure it...
>>
>> I tried :
>> /mpl.rc('font', family = 'serif', serif = 'computer modern roman')/
>> but it did not work.
>>
>> Thanks a lot,
>>
>> Nicolas P.
>>
>>
>> --
>>
>>
>> Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT
>> is a gathering of tech-side developers & brand creativity
>> professionals. Meet
>> the minds behind Google Creative Lab, Visual Complexity, Processing,
>> & iPhoneDevCamp as they present alongside digital heavyweights like
>> Barbarian Group, R/GA, & Big Spaceship.
>> http://p.sf.net/sfu/creativitycat-com
>>
>>
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>>
>
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[Matplotlib-users] Vertical and horizontal lines width
Hi, I noticed that vertical and horizontal lines with a line width < 1 are displayed with a line width of 1 on WxAgg with recent version of matplotlib. I use matplotlib 0.98.5.2 on Windows XP, and Ubuntu Linux 9.04. For example : >>> import pylab >>> pylab.plot([0,0],[0,1],linewidth=*0.5*) [] >>> pylab.show() and >>> import pylab >>> pylab.plot([0,0],[0,1],linewidth=*1*) [] >>> pylab.show() produce the same result. The same bug occurs when I export the figure as a png (but not on pdf export). It did not occur on earlier matplotlib releases (at least, not on 0.91.2). Sorry if this is a known bug, or even an already corrected one, but I couldn't find any mention of it on Sourceforge last changelog, nor elsewhere. Nicolas -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] [ANN] glumpy 0.2.0
Hi folks, I am pleased to announce a new release of glumpy, a small python library for the (very) fast vizualization of numpy arrays, (mainly two dimensional) that has been designed with efficiency in mind. If you want to draw nice figures for inclusion in a scientific article, you’d better use matplotlib but if you want to have a sense of what’s going on in your simulation while it is running, then maybe glumpy can help you. Download and screenshots at: http://code.google.com/p/glumpy/ Nicolas-- BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA http://p.sf.net/sfu/rim-devcon-copy2___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] [ANN] glumpy 0.2.0
Hi folks, I am pleased to announce a new release of glumpy, a small python library for the (very) fast vizualization of numpy arrays, (mainly two dimensional) that has been designed with efficiency in mind. If you want to draw nice figures for inclusion in a scientific article, you’d better use matplotlib but if you want to have a sense of what’s going on in your simulation while it is running, then maybe glumpy can help you. Download and screenshots at: http://code.google.com/p/glumpy/ Nicolas-- BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA http://p.sf.net/sfu/rim-devcon-copy2___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [ANN] glumpy 0.2.0
The interactive plot has been done using the AntTweakBar library and is not really user friendly. You can view the source from the demos directory: http://code.google.com/p/glumpy/source/browse/demos/atb.py Also, note that glumpy is not a replacement for matplotlib but rather a testbed for a future OpenGL backend to be integrated into matplotlib. Nicolas On Sep 18, 2011, at 14:00 , Stef Mientki wrote: > hi Nicolas, > > looks very interesting. > > I was considering to move from MatPlotLib to guiqwt, > because of it's easy interactive plots. > But I see glumpy has it too. > Can show the source code for the interactive plot in your examples ? > > thanks, > stef > > > On 17-09-2011 19:22, Nicolas Rougier wrote: >> >> >> Hi folks, >> >> I am pleased to announce a new release of glumpy, a small python library for >> the (very) fast vizualization of numpy arrays, (mainly two dimensional) that >> has been designed with efficiency in mind. If you want to draw nice figures >> for inclusion in a scientific article, you’d better use matplotlib but if >> you want to have a sense of what’s going on in your simulation while it is >> running, then maybe glumpy can help you. >> >> >> Download and screenshots at: http://code.google.com/p/glumpy/ >> >> Nicolas >> >> >> -- >> BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA >> http://p.sf.net/sfu/rim-devcon-copy2 >> >> >> ___ >> Matplotlib-users mailing list >> Matplotlib-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- > BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA > http://p.sf.net/sfu/rim-devcon-copy2___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA http://p.sf.net/sfu/rim-devcon-copy2___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] data free margin
Is that what you want ? No ticks, no labels: import matplotlib.pyplot as plt plt.plot(np.arange(10), np.arange(10)) plt.ylim(0,10) plt.yticks(np.linspace(3,10,8)) plt.show() Ticks but no labels: import matplotlib.pyplot as plt plt.plot(np.arange(10), np.arange(10)) plt.ylim(0,10) plt.yticks(np.linspace(0,10,11), ['']*3 + ['%d' % i for i in linspace(3,10,8)]) plt.show() Nicolas On Nov 22, 2011, at 20:13 , C M wrote: > What's the best way in Matplotlib to have a y axis that doesn't have > ticks/axis numbers near the bottom of the graph? I don't know if it would be > specified as the bottom 1/10th of the graph or x amount of pixels or inches > or whatever...just need a bit of extra "y-less" space there to plot values > that have an x value but no y value. I'm assuming this would be done with a > Formatter or Locator, but wasn't sure how to go about it. > > See attached image > > Thanks, > Che > -- > All the data continuously generated in your IT infrastructure > contains a definitive record of customers, application performance, > security threats, fraudulent activity, and more. Splunk takes this > data and makes sense of it. IT sense. And common sense. > http://p.sf.net/sfu/splunk-novd2d___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Hardware rendering with tricontourf
Thanks for posting the link to glumpy. As Benjamin explained, glumpy servers as a testbed for various technics that could be implemented later in matplotlib. The main problem today is that if you want to benefit from hardware acceleration, you have to use some GL features that are not compatible with he whole matplotlib framework (and we need to ensure some degree of compatibilty). I do not have yet a clean solution and I'm still experimenting. For your tricontourf problem, I think it might be solved quite easily with the proper GL shader but I would need a complete (and basic) matplotlib script example to check if this is actually the case. Nicolas On Jan 27, 2012, at 23:12 , Benjamin Root wrote: > On Fri, Jan 27, 2012 at 10:06 AM, Howard wrote: > On 1/27/12 3:39 AM, Ian Thomas wrote: >> >> On 26 January 2012 19:36, Howard wrote: >> I'm rendering some images with about 3.5 million triangles into a 512x512 >> png file using tricontourf. I'm running this in a virtual machine, and I'm >> pretty sure that there is no graphics rendering hardware being used. Is it >> possible, assuming the hardware was available, to make tricontourf use the >> rendering hardware? Will that happen by default? >> >> You are correct, there is no graphics hardware rendering. Rendering is >> controlled by the various matplotlib backends, and to my knowledge there are >> no backends currently available that use hardware rendering. >> >> There has been some work done on an OpenGL backend, but I am not sure of the >> status of this. The last time I checked it was pretty experimental. >> Perhaps someone involved with it can comment on its current status. >> >> Ian Thomas > Ian > > Thanks very much for the reply. If it helps whoever is doing the OpenGL > backend, I may be able to play with it a bit. > > > Howard > > > That would be the Glumpy project. > > http://code.google.com/p/glumpy/ > > As stated in an email response a while back, glumpy is intended to be a > testbed for developing the OpenGL backend for future inclusion into > matplotlib. > > Cheers! > Ben Root > > -- > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Matplotlib gallery
I've seen the discussion around the re-organization of the matplotlib gallery. If that might help, here is a link to a small gallery I made. The overall organization is simply based on subdirectories so maybe it could be a (temporary) solution for the matplotlib gallery (just matter of moving examples in the right subdirectory). http://www.loria.fr/~rougier/coding/gallery/ https://github.com/rougier/gallery Nicolas -- Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib gallery
I agree, but the current matplotlib gallery is rather clueless about what the examples are related to until you click an image. I'm personally using the gallery by looking at an example that match what I've in mind most closely and then look at the code. But you're right, some structure(s) would definitely help. Here is an example of a well structured gallery: http://www.gigawiz.com/aagraphs.html. The first-level structure is organized at: Specialized Scientific Graphing Scatter Graphs Contour Charts (2-D, 3-D, and Ternary) Heatmaps Voronoi Diagram Waterfall Charts Bubble Charts Spider Charts Polar Charts Column and Bar Charts Area Charts Line Charts Combination Charts (Column-Line, Bar-Line, Area-Line) Diagrams of Multiple, Independent Value-Axes Column, Bar or Area Graphs High-Low, (Open)-High-Low-Close, and Range Charts Pie Charts and X-Y Scatter Pie Vector Charts Statistical Charts Maybe we can find/agree on similar structure(s)/sub-structure(s) and adapt it to the current gallery ? Nicolas On Feb 23, 2012, at 16:59 , Jerzy Karczmarczuk wrote: > Nicolas Rougier : >> I've seen the discussion around the re-organization of the matplotlib >> gallery. >> If that might help, here is a link to a small gallery I made. >> >> The overall organization is simply based on subdirectories so maybe it could >> be a (temporary) solution for the matplotlib gallery (just matter of moving >> examples in the right subdirectory). > THANKS, Nicolas. > > This is a nice initiative, but I believe that in the context of a > presentation of some software, this is not the way I would have chosen. > Why people look-up /such/ galleries? Why I do it myself? What are the > needs of my students (about 20 - 30 guys who work with matplotlib week > after wek)? > > Often because I want to find a concrete program, which answers a > concrete question : how to implement timed animations. How to make > multiple plots. How to insert a figure in a GUI with widgets, how to > distort an image matrix, etc. etc. So a gallery should contains infos > about what the hell the example XYZ is about, what does it show, where > is the *concrete* documentation page with the description of the tools > used, etc. > > The order of examples should be rational, and as ALWAYS some cross-links > would be useful. > Program-sources without comments are not so useful... > > == > > But I believe that this is just a start, and I am aware that to > criticize is easier than to do something. (Je suis un grognon né, > Nicolas, désolé...). So please, continue, my heart is with you! > > > Jerzy Karczmarczuk > Caen, France. > > > -- > Virtualization & Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] histogram and a line
You need to specify the ylim because your height may be larger than your
histogram and then you cannot see it.
Here is a script that reproduce your screenshot (with random data).
import numpy as np
import matplotlib.pyplot as plt
plt.rc('xtick', direction = 'out')
plt.rc('ytick', direction = 'out')
data = np.random.normal(0,1,100)
fig = plt.figure(figsize=(8,6), dpi=72, facecolor='w')
axes = plt.subplot(111)
axes.axvline(np.mean(data), 0, data.max(), linewidth=2, color='red')
axes.hist(data, bins=50, normed=True)
axes.set_ylim(0, 1)
axes.set_xlim(-3, 3)
axes.spines['right'].set_color('none')
axes.spines['top'].set_color('none')
axes.xaxis.set_ticks_position('bottom')
axes.spines['bottom'].set_position(('data', -0.05))
axes.yaxis.set_ticks_position('left')
axes.spines['left'].set_position(('data',-3.25))
plt.show()
Nicolas
On Mar 8, 2012, at 7:54 , Mic wrote:
> Hi Jerzy,
> Thank you for your answer. With the code below I get only a green line (see
> attached line.png):
>
> import numpy as np
> import matplotlib.pyplot as plt
>
> hist_data = []
>
> heigth = max(hist_data) + 10
> mean = np.mean(hist_data)
>
> f = plt.figure()
> h = f.add_subplot(111)
> h.hist(hist_data, bins=50, normed=True)
> h.plot([mean,mean],[0,height])
> f.savefig('myhist.png')
>
> without h.plot() I get a histogram (see attached matplot_hist.png).
>
> How can I get the line and the histogram at the same time in the picture?
> How is it possible to norm the vertical axis in order to get similar results
> like in this picture (see attached hist.png)?
>
> Thank you in advance.
>
> On Wed, Mar 7, 2012 at 6:41 PM, Jerzy Karczmarczuk
> wrote:
> Mic:
>> Hello,
>> I am able to draw a histogram with the following code:
>>
>> ...
>> h.hist(hist_data, bins=50, normed=True)
>>
>> However, I don't know how to draw a line for median at 249 position like in
>> attachment.
> Are your axes really matplotlib axes? (I have doubts, since the vertical is
> not normed, although your histogram is).
>
> In your real axes, the command plot([249,249],[0,height]) draws a vertical
> line (there is a primitive vert. line as well), what is the problem??
>
> Jerzy Karczmarczuk
>
>
>
> --
> Virtualization & Cloud Management Using Capacity Planning
> Cloud computing makes use of virtualization - but cloud computing
> also focuses on allowing computing to be delivered as a service.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/
> ___
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
> --
> Virtualization & Cloud Management Using Capacity Planning
> Cloud computing makes use of virtualization - but cloud computing
> also focuses on allowing computing to be delivered as a service.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/___
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
--
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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Re: [Matplotlib-users] tornado chart
I did it once and posted it to the list but never found the time to add it to
the official gallery (my bad):
http://www.loria.fr/~rougier/coding/gallery/showcase/showcase-3-large.png
http://www.loria.fr/~rougier/coding/gallery/
Nicolas
On Jun 23, 2012, at 5:36 , Benjamin Root wrote:
>
>
> On Friday, June 22, 2012, John Hunter wrote:
> On Fri, Jun 22, 2012 at 2:48 PM, Alan G Isaac wrote:
> > On 6/21/2012 10:24 PM, Tony Yu wrote:
> >> Here's an example based off the horizontal bar charts in the gallery.
> >
> > Pretty good, really!
> > More than just a starting point.
>
> And here is a modified example a little closer visually
>
>
> # tornado chart example; inspired by
> # http://www.nytimes.com/imagepages/2007/07/29/health/29cancer.graph.web.html
> # and sample code from Tony Yu
> import numpy as np
> import matplotlib.pyplot as plt
>
> cancers = [
>'Kidney cancer',
>'Bladder cancer',
>'Esophageal cancer',
>'Ovarian cancer',
>'Liver cancer',
>"Non-Hodgkin's\nlymphoma",
>'Leukemia',
>'Prostate cancer',
>'Pancreatic cancer',
>'Breast cancer',
>'Colorectal cancer',
>'Lung cancer',
>]
>
> num_cancers = len(cancers)
>
> # generate some random data for the graphs (TODO; put real data here)
> new_cases_men = np.random.uniform(low=20e3, high=200e3, size=num_cancers)
> new_cases_women = np.random.uniform(low=20e3, high=200e3, size=num_cancers)
> deaths_women = np.random.rand(num_cancers)*new_cases_women
> deaths_men = np.random.rand(num_cancers)*new_cases_men
>
> # force these values where the labels happen to make sure they are
> # positioned nicely
> new_cases_men[-1] = 120e3
> new_cases_men[-2] = 55e3
> deaths_men[-1] = 80e3
>
> # bars centered on the y axis
> pos = np.arange(num_cancers) + .5
>
> # make the left and right axes for women and men
> fig = plt.figure(facecolor='white', edgecolor='none')
> ax_women = fig.add_axes([0.05, 0.1, 0.35, 0.8])
> ax_men = fig.add_axes([0.6, 0.1, 0.35, 0.8])
>
> ax_men.set_xticks(np.arange(50e3, 201e3, 50e3))
> ax_women.set_xticks(np.arange(50e3, 201e3, 50e3))
>
> # turn off the axes spines except on the inside y-axis
> for loc, spine in ax_women.spines.iteritems():
>if loc!='right':
>spine.set_color('none') # don't draw spine
>
> for loc, spine in ax_men.spines.iteritems():
>if loc!='left':
>spine.set_color('none') # don't draw spine
>
> # just tick on the top
> ax_women.xaxis.set_ticks_position('top')
> ax_men.xaxis.set_ticks_position('top')
>
> # make the women's graphs
> ax_women.barh(pos, new_cases_women, align='center',
> facecolor='#DBE3C2', edgecolor='None')
> ax_women.barh(pos, deaths_women, align='center', facecolor='#7E895F',
> height=0.5, edgecolor='None')
> ax_women.set_yticks([])
> ax_women.invert_xaxis()
>
> # make the men's graphs
> ax_men.barh(pos, new_cases_men, align='center', facecolor='#D8E2E1',
> edgecolor='None')
> ax_men.barh(pos, deaths_men, align='center', facecolor='#6D7D72',
> height=0.5, edgecolor='None')
> ax_men.set_yticks([])
>
> # we want the cancer labels to be centered in the fig coord system and
> # centered w/ respect to the bars so we use a custom transform
> import matplotlib.transforms as transforms
> transform = transforms.blended_transform_factory(
>fig.transFigure, ax_men.transData)
> for i, label in enumerate(cancers):
>ax_men.text(0.5, i+0.5, label, ha='center', va='center',
> transform=transform)
>
> # the axes titles are in axes coords, so x=0, y=1.025 is on the left
> # side of the axes, just above, x=1.0, y=1.025 is the right side of the
> # axes, just above
> ax_men.set_title('MEN', x=0.0, y=1.025, fontsize=12)
> ax_women.set_title('WOMEN', x=1.0, y=1.025, fontsize=12)
>
> # the fig suptile is in fig coords, so 0.98 is the far right; we right
> align the text
> fig.suptitle('July 29, 2007', x=0.98, ha='right')
>
> # now add the annotations
> ax_men.annotate('New Cases', xy=(0.95*new_cases_men[-1], num_cancers-0.5),
>xycoords='data',
>xytext=(20, 0), textcoords='offset points',
>size=12,
>va='center',
>arrowprops=dict(arrowstyle="
Re: [Matplotlib-users] Accelerating PDF saved plots
Your files do not seem to be readable: http://atmos.uwyo.edu/~gsever/data/matplotlib/test_speed.py http://atmos.uwyo.edu/~gsever/data/matplotlib/test_speed.pdf Nicolas On Jul 4, 2012, at 19:17 , Gökhan Sever wrote: > Hello, > > I am working on creating some distribution plots to analyze cloud droplet and > drop features. You can see one such plot at > http://atmos.uwyo.edu/~gsever/data/rf06_1second/rf06_belowcloud_SurfaceArea_1second.pdf > This file contains 38 pages and each page has 16 panels created via MPL's > AxesGrid toolkit. I am using PdfPages from pdf backend profile to construct > this multi-page plot. The original code that is used to create this plot is > in > http://code.google.com/p/ccnworks/source/browse/trunk/parcel_drizzle/rf06_moments.py > > The problem I am reporting is due to the lengthier plot creation times. It > takes about 4 minutes to create such plot in my laptop. To better demonstrate > the issue I created a sample script which you can use to reproduce my timing > results --well based on pseudo/random data points. All my data points in the > original script are float64 so I use float64 in the sample script as well. > > The script is at http://atmos.uwyo.edu/~gsever/data/matplotlib/test_speed.py > I also included 2 pages output running the script with nums=2 setting > http://atmos.uwyo.edu/~gsever/data/matplotlib/test_speed.pdf > Comparing my original output, indeed cloud particles are not from a normal > distribution :) > > Joke aside, running with nums=2 for 2 pages > > time run test_speed.py > CPU times: user 12.39 s, sys: 0.10 s, total: 12.49 s > Wall time: 12.84 s > > when nums=38, just like my original script, then I get similar timing to my > original run > > time run test.py > CPU times: user 227.39 s, sys: 1.74 s, total: 229.13 s > Wall time: 234.87 s > > In addition to these longer plot creation times, 38 pages plot creation > consumes about 3 GB memory. I am wondering if there are tricks to improve > plot creation times as well as more efficiently using the memory. Attempting > to create two such distributions blocks my machine eating 6 GB of ram space. > > Using Python 2.7, NumPy 2.0.0.dev-7e202a2, IPython 0.13.beta1, matplotlib > 1.1.1rc on Fedora 16 (x86_64) > > Thanks. > > -- > Gökhan > -- > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. > http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Additional line styles - comparison excel chart
Here is a quick example that might help you: http://www.loria.fr/~rougier/coding/gallery/showcase/showcase-10-large.png http://www.loria.fr/~rougier/coding/gallery/showcase/showcase-10.py Nicolas On Jul 16, 2012, at 11:27 , Daπid wrote: > On Mon, Jul 16, 2012 at 11:09 AM, Benjamin Jonen wrote: >> 2) The coloring and the way the lines curve around looks very nice to >> me. I remember that the Excel charts did not have this nice look >> before Excel 2007. Can I achieve similar effects with matplotlib? I'm >> not really sure what creates this nice look, so this question is of >> course a little fuzzy. > > Maybe you are thinking about the smoothness of the curves. Even you > have spaced points, they don't do sharp edges. In my opinion, for > scientific research, they shouldn't be concealed in the general case, > and this is, I think, the main target of MPL. > > Nevertheless, if in your case it makes sense and you want them to be > smooth, you can do it through SciPy, applying a interpolation scheme. > > tck=scipy.interpolate(datax, datay) > datax_n=np.arange(datax.min(), datax.max(), len(datax)*20) > datay_n=sicpy.interpolate(splev(datax_n,tck,der=0) > > And then you plot datax_n and datay_n. > > http://docs.scipy.org/doc/scipy/reference/tutorial/interpolate.html#spline-interpolation-in-1-d-procedural-interpolate-splxxx > > -- > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] need an icon for a new featureH
What size/format do you need and would that be an option to transform/use Tango icons ? http://tango.freedesktop.org/ http://commons.wikimedia.org/wiki/Tango_icons Tango (for fullscreen but might suit tight-layout) <> <> <> <> <> Nicolas On Jul 19, 2012, at 0:47 , Benjamin Root wrote: > Hello all! > > I have just about completed a PR that would add a new button to the > navigation toolbar for the tight_layout() action. I am hardly an artist and > have no clue how to graphically represent the tight_layout action in a tiny > icon. I would greatly welcome any graphics artist out there who could > provide such an icon for matplotlib. > > Thanks! > Ben Root > -- > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. > http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] New tutorial (beginner level)
Hi all, I've just finished a new introductory tutorial for incoming Euroscipy 2012. You can find it here: http://www.loria.fr/~rougier/teaching/matplotlib/ It is based on Mike Müller tutorial from scipy lecture notes (http://scipy-lectures.github.com/intro/matplotlib/matplotlib.html) Sources are available from: https://github.com/rougier/scipy-lecture-notes/tree/euroscipy-2012 If you've any comments or see errors... Nicolas -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] New tutorial (beginner level)
Thank you all, I will try to correct that. I developed it in full screen mode and did not paid attention to the layout. Nicolas On Aug 10, 2012, at 15:33 , Fabrice Silva wrote: > Le vendredi 10 août 2012 à 14:19 +0100, Damon McDougall a écrit : >> On Fri, Aug 10, 2012 at 09:10:15AM -0400, Benjamin Root wrote: >>> >>> Nice work. I haven't read through all of it yet, but I did notice a layout >>> issue in firefox (using 10.0.4). Many of the code snippets are being >>> placed on top of the example image. >> >> I see this behaviour too, on Chrome, version 20.0.1132.57. > > Same on epiphany 3.4.2 (webkit 1.8.1) > > -- > Fabrice Silva > > > -- > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] New tutorial (beginner level)
Thanks, just forgot about the license. It will be the same as the scipy lecture notes which is a Creative Commons Attribution 3.0 United States License (CC-by) http://creativecommons.org/licenses/by/3.0/us Would that be ok or is a BSD one more suited ? Nicolas On Aug 10, 2012, at 15:10 , Benjamin Root wrote: > > > On Fri, Aug 10, 2012 at 8:23 AM, Nicolas Rougier > wrote: > > > Hi all, > > > I've just finished a new introductory tutorial for incoming Euroscipy 2012. > You can find it here: > > http://www.loria.fr/~rougier/teaching/matplotlib/ > > > It is based on Mike Müller tutorial from scipy lecture notes > (http://scipy-lectures.github.com/intro/matplotlib/matplotlib.html) > > Sources are available from: > https://github.com/rougier/scipy-lecture-notes/tree/euroscipy-2012 > > > If you've any comments or see errors... > > > > Nicolas > > Nice work. I haven't read through all of it yet, but I did notice a layout > issue in firefox (using 10.0.4). Many of the code snippets are being placed > on top of the example image. > > What is the license for this tutorial? You should also place some copyright > info at the bottom as well. > > Cheers! > Ben Root > -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] New tutorial (beginner level)
Not at all of course. Glad this might be of some help for matplolib. Nicolas On Aug 10, 2012, at 16:03 , Michael Droettboom wrote: > Very nice. I'm thinking of some ideas to revamp the > documentation/website, and one thing I would like to do is to link to > some of these external resources. Do you have any objections to me > linking to this? > > Mike > > On 08/10/2012 08:23 AM, Nicolas Rougier wrote: >> >> Hi all, >> >> >> I've just finished a new introductory tutorial for incoming Euroscipy 2012. >> You can find it here: >> >> http://www.loria.fr/~rougier/teaching/matplotlib/ >> >> >> It is based on Mike Müller tutorial from scipy lecture notes >> (http://scipy-lectures.github.com/intro/matplotlib/matplotlib.html) >> >> Sources are available from: >> https://github.com/rougier/scipy-lecture-notes/tree/euroscipy-2012 >> >> >> If you've any comments or see errors... >> >> >> >> Nicolas >> -- >> Live Security Virtual Conference >> Exclusive live event will cover all the ways today's security and >> threat landscape has changed and how IT managers can respond. Discussions >> will include endpoint security, mobile security and the latest in malware >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >> ___ >> Matplotlib-users mailing list >> Matplotlib-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > -- > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] New tutorial (beginner level)
Thanks Fernando ! By the way, I suspect the simple plot part may well suited for the ipython notebook ! I'll give it a try. Nicolas On Aug 11, 2012, at 4:55 , Fernando Perez wrote: > On Fri, Aug 10, 2012 at 5:23 AM, Nicolas Rougier > wrote: >> >> I've just finished a new introductory tutorial for incoming Euroscipy 2012. >> You can find it here: >> >> http://www.loria.fr/~rougier/teaching/matplotlib/ > > Wow! Other than the rendering glitches already mentioned, this is > *awesome*. We're teaching a python workshop at UC Berkeley in 2 weeks > (http://register.pythonbootcamp.info) and I just suggested we use this > for our mpl intro. > > It's the best one I've seen so far, and the reference info at the > bottom as well as the mini-gallery will make it a very useful resource > even for seasoned users. > > Fantastic job, Nicolas (and Mike M.), and thanks for sharing this > great resource! > > Cheers, > > f -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] New tutorial (beginner level)
Fantastic ! This is very valuable teaching material. Really great job and big thanks to all the ipython developers. Matthias, hope to see you at Euroscipy (and see some ipython demos). In fact, I've also some questions around ipython/webgl for you... Nicolas On Aug 11, 2012, at 9:17 , Fernando Perez wrote: > On Sat, Aug 11, 2012 at 12:09 AM, Nicolas Rougier > wrote: >> By the way, I suspect the simple plot part may well suited for the ipython >> notebook ! >> I'll give it a try. > > Actually in the notebook it is now possible to enable exercises, > hints, reveal-boxes, etc. I'm cc'ing here Matthias Bussonnier b/c I'm > not sure if he's on the mpl list. He's one of our recent core devs > who is behind a lot of our new JS magic in the notebook, and he's also > a French scientist who will be at Euroscipy, so you guys could perhaps > touch bases (I'm unfortunately not going to make it this year). > > Ultimately we'd like to make it very easy to write tutorials such as > yours directly as notebooks, so that when used in the classroom > students can work straight off them, and yet also publish then with > clean and customizable HTML on the web like you did. Lots of the > pieces are in place, though not quite all yet :) > > Cheers, > > f -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to start when you don't know what to do
I do exactly that from time to time (copying a graphic) and I always start looking at the matplotlib gallery (http://matplotlib.org/gallery.html) for what is the most similar figure and starts from here (after removing what is not necessary). Most important is identifying the kind of axis necessary (cartesian, log, polar, ...) Some examples at: http://www.loria.fr/~rougier/coding/gallery/ Some really nice graphics (but difficult) to try to copy at: http://www.improving-visualisation.org/visuals Nicolas On Jan 15, 2013, at 20:52 , Steven Boada wrote: > Heyya list. > > I must admit that my matplotlib-foo is only so so. One of the biggest > problems that I face is seeing cool stuff around the net, and thinking, > "that's pretty neat, I'd like to copy it." In reality, I have no idea > how I would go about creating something like that. > > Here's an example: http://imgur.com/JdkR4 > > Just a little circular histogram thing with some annotations. Obviously, > I'd need the annotate command for the words, but what about the arcs? No > idea, off hand. So my question is, how do you decode (read: what to > think about) figures that you see, and turn them into actual python? > Sure I could post on stack exchange or email all you people every time, > but I want to be *better* at this. And while some people are going to > scoff and reply "that's easy, silly" it's not so for some. I just hate > to admit it's me. > > Thanks for the advice. > > -- > > Steven Boada > > Doctoral Student > Dept of Physics and Astronomy > Texas A&M University > bo...@physics.tamu.edu > > > -- > Master SQL Server Development, Administration, T-SQL, SSAS, SSIS, SSRS > and more. Get SQL Server skills now (including 2012) with LearnDevNow - > 200+ hours of step-by-step video tutorials by Microsoft MVPs and experts. > SALE $99.99 this month only - learn more at: > http://p.sf.net/sfu/learnmore_122512 > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Master SQL Server Development, Administration, T-SQL, SSAS, SSIS, SSRS and more. Get SQL Server skills now (including 2012) with LearnDevNow - 200+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only - learn more at: http://p.sf.net/sfu/learnmore_122512 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] matplotlib pnpoly-example-results-in-error
>From the matplotlib page, you can reach: http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html and just translates the function: def inside_polygon(p, vertices): vx,vy = vertices[:,0], vertices[:,1] x,y = p c = 0 j = len(vertices)-1 for i in xrange(len(vertices)): if( ((vy[i] > y) != (vy[j] > y)) and (x < (vx[j]-vx[i]) * (y-vy[i]) / (vy[j]-vy[i]) + vx[i]) ): c = 1-c j = i return c Of course this would be slower than the corresponding C implementation. Nicolas On May 9, 2013, at 21:55 , algotr8der wrote: > I tried to execute the following code: > > http://matplotlib.org/faq/howto_faq.html#test-whether-a-point-is-inside-a-polygon > > However I get errors I describe here: > > http://stackoverflow.com/questions/16452509/matplotlib-pnpoly-example-results-in-error > >>>> import numpy as np >>>> import matplotlib.nxutils as nx >>>> verts = np.array([ [0,0], [0, 1], [1, 1], [1,0]], float) >>>> nx.pnpoly(0.5, 0.5, verts) > > Traceback (most recent call last): > File "", line 1, in > File "C:\Python27\lib\site-packages\matplotlib\nxutils.py", line 26, in > pnpoly >return p.contains_point(x, y) > File "C:\Python27\lib\site-packages\matplotlib\path.py", line 289, in > contains_point >transform = transform.frozen() > AttributeError: 'float' object has no attribute 'frozen' > >>>> nx.pnpoly(0.5, 1.5, verts) > > Traceback (most recent call last): > File "", line 1, in > File "C:\Python27\lib\site-packages\matplotlib\nxutils.py", line 26, in > pnpoly >return p.contains_point(x, y) > File "C:\Python27\lib\site-packages\matplotlib\path.py", line 289, in > contains_point >transform = transform.frozen() > AttributeError: 'float' object has no attribute 'frozen' > > Apparently, nxutils is deprecated, which to me means it should still work > but a user on stackoverflow pointed out that there may be some code rot. > That said, the documentation on matplotlib.path.Path.contains_point is weak > (see below). Does anyone have an example of how I can do the exact same > thing in the code in the howto_faq but using the suggested function > (contains_point)? > > http://matplotlib.org/1.2.1/api/path_api.html?highlight=contains_point#matplotlib.path.Path.contains_point > > contains_point(point, transform=None, radius=0.0) > >Returns True if the path contains the given point. >If transform is not None, the path will be transformed before performing > the test. >radius allows the path to be made slightly larger or smaller. > > contains_points(points, transform=None, radius=0.0) > >Returns a bool array which is True if the path contains the > corresponding point. >If transform is not None, the path will be transformed before performing > the test. >radius allows the path to be made slightly larger or smaller. > > > > > > > -- > View this message in context: > http://matplotlib.1069221.n5.nabble.com/re-matplotlib-pnpoly-example-results-in-error-tp41028.html > Sent from the matplotlib - users mailing list archive at Nabble.com. > > -- > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and > their applications. This 200-page book is written by three acclaimed > leaders in the field. The early access version is available now. > Download your free book today! http://p.sf.net/sfu/neotech_d2d_may > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] contourf() for "proper plotting purpose"
You can use the 'origin' keyword: pl.controuf(Matrix, origin='lower') or pl.controuf(Matrix, origin='upper') Nicolas On May 23, 2013, at 7:27 AM, Bakhtiyor Zokhidov wrote: > Hi, > > I have following code: > > import numpy as np > import pylab as pl > > Matrix(10,10) = > np.array([[ 4.5, 4.5, 4.5, 3.4, 2.5, 3.9, 3.4, 3.4, 2.2, 3.9], > [ 3.9, 4.5, 5.2, 4.5, 3.4, 3.4, 2.2, 2.9, 3.4, 3.4], > [ 3.9, 3.9, 2.5, 2.2, 1.9, 1.2, 1.2, 1.4, 2.5, 2.9], > [ 3.4, 3.9, 2.9, 2.2, 1.2, 1.4, 1.7, 1.4, 1.9, 2.2], > [ 2.5, 3.4, 2.2, 1.4, 1.2, 1.2, 1.7, 0.8, 1.9, 1.7], > [ 2.5, 2.2, 2.5, 1.2, 1.2, 0.9, 1.7, 1.7, 1.4, 1.9], > [ 2.2, 2.2, 3.4, 1.7, 0.9, 0.9, 0.9, 1.2, 1.7, 1.9], > [ 2.9, 1.9, 1.9, 1.4, 1.1, 0.9, 1.2, 1.1, 1.7, 1.9], > [ 2.9, 1.7, 2.2, 1.4, 1.1, 0.9, 1.1, 0.8, 1.1, 1.9], > [ 2.5, 1.9, 1.7, 1.2, 1.4, 0.8, 1.1, 0.8, 1.4, 1.7]]) > > pl.contourf(Matrix) > pl.show() > > The problem is that that plots reversely, in other words top values are > below, bottom values are top!! > > How can I plot it properly? > > > -- > Bakhtiyor Zokhidov > -- > Try New Relic Now & We'll Send You this Cool Shirt > New Relic is the only SaaS-based application performance monitoring service > that delivers powerful full stack analytics. Optimize and monitor your > browser, app, & servers with just a few lines of code. Try New Relic > and get this awesome Nerd Life shirt! > http://p.sf.net/sfu/newrelic_d2d_may___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Graph ticks label missing !
Hi,
Following an hardware failure I had to move some matplotlib scripts from
an ancient (but updated) Debian box to a clean RHEL 6 VM. As a result my
matplotlib version changed from 1.2.0 (as present in Debian instable) to
1.2.1 (some of the code wanted matplotlib ≥ 1.0, so I rebuilt an 1.2.1
packaged based on the Fedora 1.2.0 one. 1.3.0-rc2 / 1.3.0git gave me so
many dependencies griefs I gave up on it)
Anyway the result seems to work fine so far, except for a few scores of
time graphs where some tick labels gone missing. Those graphs are supposed
to show weekly data, with:
– ticks on month ends,
– subticks on week ends,
– week numbers in the middle of each week (top) and
– month numbers on the middle of each month (bottom).
With the new installation months numbers got missing.
Here is an extract of the relevant code :
%<---
subplot.set_xticks([dd.monthstart(m) for m in months])
subplot.set_xticks([w.gmticks() for w in weeks], minor=True)
subplot.set_xticklabels([])
plt.xlim(dd.monthstart(min(months)),dd.monthend(max(months)))
subplot1 = subplot.twiny()
mmonths = [m for i,m in enumerate(months)
if operator.mod(i,1+(len(months)-1)/12) == 0]
subplot1.set_xticks([dd.monthmiddle(m) for m in mmonths])
subplot1.set_xticklabels(mmonths)
subplot1.tick_params(labelsize='6.5',labelbottom=True, labeltop=False)
plt.xlim(dd.monthstart(min(months)),dd.monthend(max(months)))
subplot2 = subplot.twiny()
mweeks = [w for i,w in enumerate(weeks)
if operator.mod(i,1+(len(weeks)-1)/53) == 0]
subplot2.set_xticks([dd.weekmiddle(w) for w in mweeks])
subplot2.set_xticklabels([w.iso_week[1] for w in mweeks])
subplot2.tick_params(labelsize='5',labelbottom=False, labeltop=True,pad=3)
plt.xlim(dd.monthstart(min(months)),dd.monthend(max(months)))
subplot2.xaxis.set_ticks_position('none')
subplot1.xaxis.set_ticks_position('none')
subplot.xaxis.set_ticks_position('both')
%<---
I've tried to move the
subplot1.tick_params(labelsize='6.5',labelbottom=True, labeltop=False)
line to the end of the block, but it seems matplotlib is confusing
subplot1 and subplot2, and that results in the displaying of week numbers
(not month numbers) to the bottom of the plot (and the week numbers
disappear from the top of the graph).
Any idea how to restore the previously working behaviour ?
Regards,
--
Nicolas Mailhot
--
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[Matplotlib-users] [Patch] Patch for fontmanager crash
Hi, In matplotlib 1.2.1, the get_name function is not garding against none self (unlike other functions); Unfortunately it seems I have a workload that makes matplotlib call get_name with None (wasn't the case in 1.2.0). I couldn't isolate the exact trigger, when I reduce the volume of data processed the problem goes away so I have to simple shareable reproducer. Anyway, the following patch makes it all work for me, could it (or something similar) be merged? diff -uNr matplotlib-1.2.1.orig/lib/matplotlib/font_manager.py matplotlib-1.2.1/lib/matplotlib/font_manager.py --- matplotlib-1.2.1.orig/lib/matplotlib/font_manager.py2013-03-26 14:04:37.0 +0100 +++ matplotlib-1.2.1/lib/matplotlib/font_manager.py 2013-07-08 14:49:37.791845661 +0200 @@ -721,6 +721,8 @@ Return the name of the font that best matches the font properties. """ +if self._family is None: + return rcParams['font.family'] return ft2font.FT2Font(str(findfont(self))).family_name def get_style(self): Regards, -- Nicolas Mailhot -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [Patch] Patch for fontmanager crash
Le Lun 8 juillet 2013 18:18, Martin Mokrejs a écrit : > Nicolas Mailhot wrote: >> Hi, >> >> In matplotlib 1.2.1, the get_name function is not garding against none >> self (unlike other functions); Unfortunately it seems I have a workload >> that makes matplotlib call get_name with None (wasn't the case in >> 1.2.0). >> I couldn't isolate the exact trigger, when I reduce the volume of data >> processed the problem goes away so I have to simple shareable >> reproducer. >> >> Anyway, the following patch makes it all work for me, could it (or >> something similar) be merged? >> >> diff -uNr matplotlib-1.2.1.orig/lib/matplotlib/font_manager.py >> matplotlib-1.2.1/lib/matplotlib/font_manager.py >> --- matplotlib-1.2.1.orig/lib/matplotlib/font_manager.py >> 2013-03-26 >> 14:04:37.0 +0100 >> +++ matplotlib-1.2.1/lib/matplotlib/font_manager.py 2013-07-08 >> 14:49:37.791845661 +0200 >> @@ -721,6 +721,8 @@ >> Return the name of the font that best matches the font >> properties. >> """ >> +if self._family is None: >> + return rcParams['font.family'] >> return ft2font.FT2Font(str(findfont(self))).family_name >> >> def get_style(self): >> >> Regards, >> > > Could you instead just test for "if not self._family"? Tests for equality > are more expensive (that means self._family == 0 or self._family == False > will also trigger your return). I can test if it works. However, all the other tests in that file are already of the if Foo is None form, and I didn't want to change the coding style Regards, -- Nicolas Mailhot -- See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [Patch] Patch for fontmanager crash
Le Mar 9 juillet 2013 15:14, Nicolas Mailhot a écrit : > > Le Lun 8 juillet 2013 18:18, Martin Mokrejs a écrit : >> Could you instead just test for "if not self._family"? Tests for >> equality >> are more expensive (that means self._family == 0 or self._family == >> False >> will also trigger your return). > > I can test if it works. However, all the other tests in that file are > already of the if Foo is None form, and I didn't want to change the coding > style And I can confirm the following patch also fixes my workload diff -uNr matplotlib-1.2.1.orig/lib/matplotlib/font_manager.py matplotlib-1.2.1/lib/matplotlib/font_manager.py --- matplotlib-1.2.1.orig/lib/matplotlib/font_manager.py2013-03-26 14:04:37.0 +0100 +++ matplotlib-1.2.1/lib/matplotlib/font_manager.py 2013-07-08 14:49:37.791845661 +0200 @@ -721,6 +721,8 @@ Return the name of the font that best matches the font properties. """ +if not self._family: + return rcParams['font.family'][0] return ft2font.FT2Font(str(findfont(self))).family_name def get_style(self): Now could something similar be merged? Regards, -- Nicolas Mailhot -- See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Vectorization
Hi all, I don't really know where to ask, so here it is. I was able to vectorize the normalization calculation in quantum mechanics: . Basically it's a volume integral of a scalar field. Using: > norm = 0.0 > for i in numpy.arange(len(dx)-1): > for j in numpy.arange(len(dy)-1): > for k in numpy.arange(len(dz)-1): > norm += psi[k,j,i]**2 * dx[i] * dy[j] * dz[k] > if dead slow. I replaced that with: > norm = (psi**2 * > dx*dy[:,numpy.newaxis]*dz[:,numpy.newaxis,numpy.newaxis]).sum() > which is almost instantanious. I want to do the same for the calculation of the kinetic energy: /2m. There is a laplacian in the volume integral which complicates things: > K = 0.0 > for i in numpy.arange(len(dx)-1): > for j in numpy.arange(len(dy)-1): > for k in numpy.arange(len(dz)-1): > K += -0.5 * m * phi[k,j,i] * ( > (phi[k,j,i-1] - 2.0*phi[k,j,i] + phi[k,j,i+1]) / dx[i]**2 > + (phi[k,j-1,i] - 2.0*phi[k,j,i] + phi[k,j+1,i]) / dy[j]**2 > + (phi[k-1,j,i] - 2.0*phi[k,j,i] + phi[k+1,j,i]) / dz[k]**2 > ) > My question is, how would I vectorize such loops? I don't know how I would manage the "numpy.newaxis" code-foo with neighbours dependency... Any idea? Thanx! -- This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] imshow() and a transparent colormap?
On Fri, Oct 1, 2010 at 5:38 PM, Stan West wrote: > *From:* Nicolas Bigaouette [mailto:nbigaoue...@gmail.com] > *Sent:* Thursday, September 30, 2010 18:00 > > What I would like to do it have a colormap which is transparent for lower > values of data and opaque for high values, so the blue on the figure would > appear white/transparent. > > Would it suffice for the colormap to be light or white for low values but > still opaque? There are several built-in maps [1] with a light color at one > end; if it's light at the high end, append "_r" to the colormap name to get > the reversed version. > > [1] > http://matplotlib.sourceforge.net/examples/pylab_examples/show_colormaps.html > I guess it's the best solution for now. Thanks ;) -- Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] RuntimeError: CGContextRef is NULL
I'm trying to have animated plots using draw_artist on mac os x and I got an error with the following script: import numpy as np import matplotlib.pyplot as plt plt.ion() plt.figure() subplot = plt.subplot(1,1,1) axis = plt.imshow(np.random.random((10,10))) plt.draw() subplot.draw_artist(axis) plt.show() The traceback is: Traceback (most recent call last): File "matplotlib-bug.py", line 8, in subplot.draw_artist(axis) File "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/axes.py", line 1946, in draw_artist a.draw(self._cachedRenderer) File "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/artist.py", line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/image.py", line 338, in draw gc = renderer.new_gc() File "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py", line 105, in new_gc self.gc.save() RuntimeError: CGContextRef is NULL Is there something wrong in my script (it seems to be working on linux) ? Information: matplotlib version: 1.0.0 python version 2.7 macosx version: 10.6.4 Nicolas -- Virtualization is moving to the mainstream and overtaking non-virtualized environment for deploying applications. Does it make network security easier or more difficult to achieve? Read this whitepaper to separate the two and get a better understanding. http://p.sf.net/sfu/hp-phase2-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] RuntimeError: CGContextRef is NULL
Thanks. Unfortunately wx and tk backends are broken on my machine (but they may be easier to fix). I will file a bug report for the native backend bug. Nicolas On Oct 4, 2010, at 22:27 , Friedrich Romstedt wrote: > 2010/10/4 Nicolas Rougier : >> I'm trying to have animated plots using draw_artist on mac os x and I got an >> error with the following script: >> >> import numpy as np >> import matplotlib.pyplot as plt >> >> plt.ion() >> plt.figure() >> subplot = plt.subplot(1,1,1) >> axis = plt.imshow(np.random.random((10,10))) >> plt.draw() >> subplot.draw_artist(axis) >> plt.show() >> >> The traceback is: >> >> Traceback (most recent call last): >> File "matplotlib-bug.py", line 8, in >>subplot.draw_artist(axis) >> File "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/axes.py", >> line 1946, in draw_artist >>a.draw(self._cachedRenderer) >> File >> "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/artist.py", line >> 55, in draw_wrapper >>draw(artist, renderer, *args, **kwargs) >> File "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/image.py", >> line 338, in draw >>gc = renderer.new_gc() >> File >> "/Volumes/Data/Local/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py", >> line 105, in new_gc >>self.gc.save() >> RuntimeError: CGContextRef is NULL >> >> >> Is there something wrong in my script (it seems to be working on linux) ? > > I don't know what it is, and it looks like some problem with the > Mac-native backend, but I believe you can sort it out by just > switching the backend to e.g. TkAgg. > > Friedrich -- Virtualization is moving to the mainstream and overtaking non-virtualized environment for deploying applications. Does it make network security easier or more difficult to achieve? Read this whitepaper to separate the two and get a better understanding. http://p.sf.net/sfu/hp-phase2-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] automatically choose different line markers
>
> How can I automatically cycle through distinctive line markers?
>>
>> I want a semilog plot, composed of a number of lines. Each line should
>> have
>> a different color and marker.
>
>
I simply use:
colors = ['b', 'r', 'c', 'm', 'k', 'g', 'y']
symbols = ['-', '--', '-.', ':']
nc = len(colors)
ns = len(symbols)
cs = 0
cc = 0
for i in numpy.arange(len(parameters_list)):
plt.plot(x, y, colors[cc%nc] + symbols[cs%ns], label=r'$\Delta x_{min} =
' + str(dxmin[j]) + ', N = ' + str(Ns[i]) + r'$')
cc += 1
if (cc == nc):
cc = 0
cs += 1
This will cycle through symbols when colors run out. You can indent or not
"cs" to cycle through symbols too.
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[Matplotlib-users] How to get axes from a user click?
Hi all,
I have defined some shortcuts I often use using pylab.ginput(). I normally
do:
> fig = pylab.figure()
fig.canvas.mpl_connect('key_press_event', on_key)
with my "on_key" function being (simplified):
> def on_key(event):
if (event.key == 'q'):
sys.exit(0)
elif (event.key == 'w'):
pylab.close(pylab.gcf())
elif (event.key == 'd'):
print "Please click two points to get the distance and slope."
points = pylab.ginput(n=2, show_clicks=True)
[...]
pylab.plot([points[0][0], points[1][0]], [points[0][1],
> points[1][1]], '+r', lw=1.0)
pylab.plot([points[0][0], points[1][0]], [points[0][1],
> points[1][1]], '--r', lw=1.0)
pylab.draw()
I'm plotting two markers where the user clicked and a line between them.
This works fine, except when there is multiple subplots. I can correctly
select points and get their position, but the plot commands will put the
markers+line in the last subplot. I tried using "pylab.gca().plot()" but
gca() always returns the last axes.
My question is, how can I plot on the axes the user clicked on?
Thank you!
N
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Re: [Matplotlib-users] Use a marker symbol in a text string
Why not just use latex? plt.text(0.05, 0.95, r"This is the square marker: $\Box$ Subscript: $_\Box$ superscript: $^\Box$", fontsize=20) -- Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] [mplot3d] remove background
Dear all,
I'm trying to get rid of the mplot3d background (in vain, see below),
how can I do this?
Thanks for your help.
Best,
Nicolas
demo:
from mpl_toolkits.mplot3d import axes3d, axis3d
import matplotlib.pyplot as plt
import numpy as np
fig = plt.figure()
ax = axes3d.Axes3D(fig)
for axis in ax.w_xaxis, ax.w_yaxis, ax.w_zaxis:
for elt in axis.get_ticklines() + axis.get_ticklabels():
elt.set_visible(False)
myAXINFO = {
'x': {'i': 0, 'tickdir': 1, 'juggled': (1, 0, 2),
'color': (0, 0, 0, 0, 0)},
'y': {'i': 1, 'tickdir': 0, 'juggled': (0, 1, 2),
'color': (0, 0, 0, 0, 0)},
'z': {'i': 2, 'tickdir': 0, 'juggled': (0, 2, 1),
'color': (0, 0, 0, 0, 0)},
}
ax.w_xaxis._AXINFO = myAXINFO
ax.w_yaxis._AXINFO = myAXINFO
ax.w_zaxis._AXINFO = myAXINFO
plt.show()
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Re: [Matplotlib-users] [mplot3d] remove background
Thanks for the quick reply Ben. Let me know how I can help.
Regards,
N
On Sun, Nov 28, 2010 at 6:54 PM, Benjamin Root wrote:
> On Sunday, November 28, 2010, Nicolas Pinto wrote:
>> Dear all,
>>
>> I'm trying to get rid of the mplot3d background (in vain, see below),
>> how can I do this?
>>
>> Thanks for your help.
>>
>> Best,
>>
>> Nicolas
>>
>> demo:
>>
>> from mpl_toolkits.mplot3d import axes3d, axis3d
>> import matplotlib.pyplot as plt
>> import numpy as np
>>
>> fig = plt.figure()
>> ax = axes3d.Axes3D(fig)
>>
>> for axis in ax.w_xaxis, ax.w_yaxis, ax.w_zaxis:
>> for elt in axis.get_ticklines() + axis.get_ticklabels():
>> elt.set_visible(False)
>>
>> myAXINFO = {
>> 'x': {'i': 0, 'tickdir': 1, 'juggled': (1, 0, 2),
>> 'color': (0, 0, 0, 0, 0)},
>> 'y': {'i': 1, 'tickdir': 0, 'juggled': (0, 1, 2),
>> 'color': (0, 0, 0, 0, 0)},
>> 'z': {'i': 2, 'tickdir': 0, 'juggled': (0, 2, 1),
>> 'color': (0, 0, 0, 0, 0)},
>> }
>>
>> ax.w_xaxis._AXINFO = myAXINFO
>> ax.w_yaxis._AXINFO = myAXINFO
>> ax.w_zaxis._AXINFO = myAXINFO
>>
>> plt.show()
>>
>> --
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>>
>
> Unfortunately, I doubt you will be able to in the current state of
> mplot3d's code. The background objects get remade at every change of
> viewing angle or change in the figure window. I am working on some
> refactoring, but it will be a while before I tackle the drawing
> behavior.
>
> Let me take a look in the next couple of days on a possible workaround
>
> Ben Root
>
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Ph.D. Candidate, Brain & Computer Sciences
Massachusetts Institute of Technology, USA
http://web.mit.edu/pinto
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[Matplotlib-users] Bug in NonUniformImage?
Hi all,
I'm using matplotlib.image.NonUniformImage() to plot a 2D rectilinear grid
(non uniform spacing between points):
> im = matplotlib.image.NonUniformImage(grid, extent=extent, origin='lower',
> cmap = matplotlib.cm.jet, interpolation = "nearest")
im.set_data(x, y, z)
ax.images.append(im)
ax.set_xlim(extent_x)
ax.set_ylim(extent_z)
I have tried using a different interpolation value as in imshow(), but only
"nearest" and "bilinear" gives expected results. All others ('bicubic',
'spline16', 'spline36', 'hanning', 'hamming', 'hermite', 'kaiser',
'quadric', 'catrom', 'gaussian', 'bessel', 'mitchell', 'sinc' and 'lanczos')
show garbage instead of my data.
If the other interpolations are not implemented, there should be at least an
assert somewhere...
Thanx
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[Matplotlib-users] MinorLogTickFormatter and is_decade()
Hi all,
I have a derived class that I copy-pasted from the web somewhere to hide
some tick labels:
class MinorLogTickFormatter(matplotlib.ticker.LogFormatter):
# Format log scale with 10^ labels. Only if show one label over two.
def __call__(self, val, pos=None):
exponent =
int(numpy.floor(numpy.log(abs(val))/numpy.log(self._base)))
base = int(val / 10.0**exponent)
isDecade = self.is_decade(exponent)
if not isDecade and self.labelOnlyBase:
return ''
if (not (base == 2 or base == 4 or base == 6 or base == 8)): # Only
show these ones.
return ''
label = r"$%d \times 10^{%d}$" % (base, exponent)
return label
pylab.gca().xaxis.set_minor_formatter(MinorLogTickFormatter())
I've beend using this since many months, but with matplotlib 1.0.1 I can't
anymore. It complains about the is_decade() function:
isDecade = self.is_decade(exponent)
AttributeError: MinorLogTickFormatter instance has no attribute 'is_decade'
How can I fix that?
Thanks!
Nicolas
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[Matplotlib-users] Slider: can valmax be updated?
Hi all, I'm using a matplotlib.widgets.Slider on my animated figure. Sometime, I want to refresh the maximum value of the slider (since new values to plot were generated). Is it possible to update the "valmax" value of the slider? If not, is it possible to delete the slider and create a new one? Thanx! -- The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: Pinpoint memory and threading errors before they happen. Find and fix more than 250 security defects in the development cycle. Locate bottlenecks in serial and parallel code that limit performance. http://p.sf.net/sfu/intel-dev2devfeb___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Help in solving a segfault problem?
Hi all, I am stuck on matplotlib generating a segfault when invoking 'plot'. I've ben trying to solve this problem for a while now but no luck. I've seen many duplicates of this problem on the web, some with solutions, some without. The solution must be something more generic that I'm missing. Here are some of these pointers to the same problem that I have (the backtrace, that I pasted further below, has the same properties) http://old.nabble.com/101-Point-Segmentation-Fault-td27552745.html http://old.nabble.com/weird-error-with-gcc-4.4,-gomp,-cython,-and-matplotlib-td27351399.html http://bugs.gentoo.org/show_bug.cgi?id=338513 So here's my specific setup and backtrace. I hope I can find some help! I'm using the 'agg' backend that's it, and the build and install dir were cleaned up. Thanks so much! === Solaris10, 64bits, Python 2.7, numpy 1.5.1, gcc 4.4.1 #all compiled from source backtrace: gdb python (gdb) run -c 'import pylab;pylab.clf(); pylab.plot([4])' Starting program: python -c 'import pylab;pylab.clf(); pylab.plot([4])' [Thread debugging using libthread_db enabled] [New Thread 1 (LWP 1)] terminate called after throwing an instance of 'std::exception' terminate called recursively Program received signal SIGABRT, Aborted. [Switching to Thread 1 (LWP 1)] 0xfd7fff0ae88a in _lwp_kill () from /lib/64/libc.so.1 #0 0xfd7fff0ae88a in _lwp_kill () from /lib/64/libc.so.1 #1 0xfd7fff0a98b3 in thr_kill () from /lib/64/libc.so.1 #2 0xfd7fff0577e9 in raise () from /lib/64/libc.so.1 #3 0xfd7fff03a7d0 in abort () from /lib/64/libc.so.1 #4 0xfd7ff46d1a56 in __gnu_cxx::__verbose_terminate_handler () at ../../../../../libstdc++-v3/libsupc++/vterminate.cc:48 #5 0xfd7ff46cef6a in __cxxabiv1::__terminate (handler=0x1) at ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:38 #6 0xfd7ff46cefb3 in std::terminate () at ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:48 #7 0xfd7ff46cf03e in __cxxabiv1::__cxa_rethrow () at ../../../../../libstdc++-v3/libsupc++/eh_throw.cc:116 #8 0xfd7ff46d1af6 in __gnu_cxx::__verbose_terminate_handler () at ../../../../../libstdc++-v3/libsupc++/vterminate.cc:78 #9 0xfd7ff46cef6a in __cxxabiv1::__terminate (handler=0x1) at ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:38 #10 0xfd7ff46cefb3 in std::terminate () at ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:48 #11 0xfd7ff46cf0b6 in __cxxabiv1::__cxa_throw (obj=, tinfo=, dest=) at ../../../../../libstdc++-v3/libsupc++/eh_throw.cc:83 #12 0xfd7ff4a22fd8 in py_to_agg_transformation_matrix (obj=0x774380, errors=) at src/agg_py_transforms.cpp:22 #13 0xfd7ff4a32e7c in _path_module::update_path_extents (this=, args=...) at src/path.cpp:380 #14 0xfd7ff4a34d90 in Py::ExtensionModule<_path_module>::invoke_method_varargs (this=, method_def=, args=...) at ./CXX/Python2/ExtensionModule.hxx:184 #15 0xfd7ff4a209b7 in Py::method_varargs_call_handler (_self_and_name_tuple=, _args=) at CXX/Python2/cxx_extensions.cxx:1714 #16 0x004a6071 in call_function (f=0x2024770, throwflag=) at /usr/local/src/lang/Python-2.7.1/Python/ceval.c:4012 #17 PyEval_EvalFrameEx (f=0x2024770, throwflag=) at /usr/local/src/lang/Python-2.7.1/Python/ceval.c:2665 #18 0x004a79c1 in PyEval_EvalCodeEx (co=0x124e230, globals=, locals=, args=0x2024910, argcount=, kws=0x3, kwcount=2, defs=0x155c888, defcount=3, closure=0x0) -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Help in solving a segfault problem?
Hi, I didn't get much reply on this issue, so I'm just trying to resurrect the question. If there's no easy answer, could someone help me by giving me a pointer, a method to resolve the problem, or any other quick advice...? Thanks much! On Thu, Mar 10, 2011 at 12:29 AM, Nicolas SCHEFFER wrote: > Hi all, > I am stuck on matplotlib generating a segfault when invoking 'plot'. > I've ben trying to solve this problem for a while now but no luck. > I've seen many duplicates of this problem on the web, some with > solutions, some without. The solution must be something more generic > that I'm missing. > > Here are some of these pointers to the same problem that I have (the > backtrace, that I pasted further below, has the same properties) > http://old.nabble.com/101-Point-Segmentation-Fault-td27552745.html > http://old.nabble.com/weird-error-with-gcc-4.4,-gomp,-cython,-and-matplotlib-td27351399.html > http://bugs.gentoo.org/show_bug.cgi?id=338513 > > So here's my specific setup and backtrace. I hope I can find some help! > I'm using the 'agg' backend that's it, and the build and install dir > were cleaned up. > > Thanks so much! > > === > Solaris10, 64bits, Python 2.7, numpy 1.5.1, gcc 4.4.1 #all compiled from > source > > backtrace: > > gdb python > (gdb) run -c 'import pylab;pylab.clf(); pylab.plot([4])' > Starting program: python -c 'import pylab;pylab.clf(); pylab.plot([4])' > [Thread debugging using libthread_db enabled] > [New Thread 1 (LWP 1)] > terminate called after throwing an instance of 'std::exception' > terminate called recursively > > Program received signal SIGABRT, Aborted. > [Switching to Thread 1 (LWP 1)] > 0xfd7fff0ae88a in _lwp_kill () from /lib/64/libc.so.1 > > > #0 0xfd7fff0ae88a in _lwp_kill () from /lib/64/libc.so.1 > #1 0xfd7fff0a98b3 in thr_kill () from /lib/64/libc.so.1 > #2 0xfd7fff0577e9 in raise () from /lib/64/libc.so.1 > #3 0xfd7fff03a7d0 in abort () from /lib/64/libc.so.1 > #4 0xfd7ff46d1a56 in __gnu_cxx::__verbose_terminate_handler () at > ../../../../../libstdc++-v3/libsupc++/vterminate.cc:48 > #5 0xfd7ff46cef6a in __cxxabiv1::__terminate (handler=0x1) at > ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:38 > #6 0xfd7ff46cefb3 in std::terminate () at > ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:48 > #7 0xfd7ff46cf03e in __cxxabiv1::__cxa_rethrow () at > ../../../../../libstdc++-v3/libsupc++/eh_throw.cc:116 > #8 0xfd7ff46d1af6 in __gnu_cxx::__verbose_terminate_handler () at > ../../../../../libstdc++-v3/libsupc++/vterminate.cc:78 > #9 0xfd7ff46cef6a in __cxxabiv1::__terminate (handler=0x1) at > ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:38 > #10 0xfd7ff46cefb3 in std::terminate () at > ../../../../../libstdc++-v3/libsupc++/eh_terminate.cc:48 > #11 0xfd7ff46cf0b6 in __cxxabiv1::__cxa_throw (obj= optimized out>, tinfo=, dest= out>) > at ../../../../../libstdc++-v3/libsupc++/eh_throw.cc:83 > #12 0xfd7ff4a22fd8 in py_to_agg_transformation_matrix > (obj=0x774380, errors=) at > src/agg_py_transforms.cpp:22 > #13 0xfd7ff4a32e7c in _path_module::update_path_extents > (this=, args=...) at src/path.cpp:380 > #14 0xfd7ff4a34d90 in > Py::ExtensionModule<_path_module>::invoke_method_varargs (this= optimized out>, > method_def=, args=...) at > ./CXX/Python2/ExtensionModule.hxx:184 > #15 0xfd7ff4a209b7 in Py::method_varargs_call_handler > (_self_and_name_tuple=, _args= out>) > at CXX/Python2/cxx_extensions.cxx:1714 > #16 0x004a6071 in call_function (f=0x2024770, throwflag= optimized out>) > at /usr/local/src/lang/Python-2.7.1/Python/ceval.c:4012 > #17 PyEval_EvalFrameEx (f=0x2024770, throwflag=) > at /usr/local/src/lang/Python-2.7.1/Python/ceval.c:2665 > #18 0x004a79c1 in PyEval_EvalCodeEx (co=0x124e230, > globals=, locals=, > args=0x2024910, > argcount=, kws=0x3, kwcount=2, > defs=0x155c888, defcount=3, closure=0x0) > -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Help in solving a segfault problem?
Thanks much for the reply! I'll try your advice as soon as I can. BTW, I don't think this is a Solaris-related problem. If you look at the pointers in my original post, the same error can happen on other arch (I confess it can be for other reasons though). -n On Sun, Mar 13, 2011 at 1:03 PM, Jouni K. Seppänen wrote: > Nicolas SCHEFFER writes: > >> I didn't get much reply on this issue, so I'm just trying to resurrect >> the question. > > Probably not many devs using Solaris, so no-one has been able to > reproduce this. > >>> #12 0xfd7ff4a22fd8 in py_to_agg_transformation_matrix >>> (obj=0x774380, errors=) at >>> src/agg_py_transforms.cpp:22 >>> #13 0xfd7ff4a32e7c in _path_module::update_path_extents >>> (this=, args=...) at src/path.cpp:380 > > So it's in transforms-related code, but we can't see the locals. First > I'd try to recompile without optimizations and (hoping it still crashes) > inspect the local variables in these frames in gdb. Or maybe make the > functions print out their arguments and any other relevant locals. > > -- > Jouni K. Seppänen > http://www.iki.fi/jks > > > -- > Colocation vs. Managed Hosting > A question and answer guide to determining the best fit > for your organization - today and in the future. > http://p.sf.net/sfu/internap-sfd2d > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Help in solving a segfault problem?
Hi all,
So I tried what was advised to me.
python -c 'import pylab; pylab.plot([4]);'
terminate called after throwing an instance of 'std::exception'
terminate called recursively
Abort
which happens here:
14 agg::trans_affine
15 py_to_agg_transformation_matrix(PyObject* obj, bool errors = true)
16 {
17 PyArrayObject* matrix = NULL;
18
19 try
20 {
21 if (obj == Py_None)
22 throw std::exception();
Since I compiled w/o optimization flags I have this now:
#11 0xfd7ff46cf0b6 in __cxxabiv1::__cxa_throw (obj=, tinfo=,
dest=) at
../../../../../libstdc++-v3/libsupc++/eh_throw.cc:83
#12 0xfd7ff4a3c708 in py_to_agg_transformation_matrix
(obj=0x774380, errors=false) at src/agg_py_transforms.cpp:22
#13 0xfd7ff4a4132e in _path_module::update_path_extents
(this=0x144e230, args=...) at src/path.cpp:380
#14 0xfd7ff4a537ce in
Py::ExtensionModule<_path_module>::invoke_method_varargs
(this=0x144e230, method_def=0x14009b0,
args=...) at ./CXX/Python2/ExtensionModule.hxx:184
#15 0xfd7ff4a389df in Py::method_varargs_call_handler
(_self_and_name_tuple=0x1244170, _args=0x1977fb0)
at CXX/Python2/cxx_extensions.cxx:1714
#16 0x004a6071 in call_function (f=0x201e980, throwflag=)
at /usr/local/src/lang/Python-2.7.1/Python/ceval.c:4012
#17 PyEval_EvalFrameEx (f=0x201e980, throwflag=)
at /usr/local/src/lang/Python-2.7.1/Python/ceval.c:2665
#18 0x004a79c1 in PyEval_EvalCodeEx (co=0x123a130,
globals=, locals=,
args=0x201eb20, argcount=, kws=0x3,
kwcount=2, defs=0x12467e8, defcount=3, closure=0x0)
at /usr/local/src/lang/Python-2.7.1/Python/ceval.c:3252
The function has now obj=0x774380 as an argument instead of
So what is generating a PyNull object is in src/path.cpp:380
but this file doesn't exist! If I look in _path.cpp though this is
where it fails:
360 ::get_path_extents(path, trans, &extents_data[0],
&extents_data[1],
361&extents_data[2], &extents_data[3],
&xm, &ym);
I have no idea how to debug this since it seems the problem are in the
CXX extensions (calls to ceval.c)
Any idea how I can narrow down the problem?
Thanks!
On Sun, Mar 13, 2011 at 6:18 PM, Nicolas SCHEFFER
wrote:
> Thanks much for the reply!
> I'll try your advice as soon as I can.
>
> BTW, I don't think this is a Solaris-related problem.
> If you look at the pointers in my original post, the same error can
> happen on other arch (I confess it can be for other reasons though).
>
> -n
>
> On Sun, Mar 13, 2011 at 1:03 PM, Jouni K. Seppänen wrote:
>> Nicolas SCHEFFER writes:
>>
>>> I didn't get much reply on this issue, so I'm just trying to resurrect
>>> the question.
>>
>> Probably not many devs using Solaris, so no-one has been able to
>> reproduce this.
>>
>>>> #12 0xfd7ff4a22fd8 in py_to_agg_transformation_matrix
>>>> (obj=0x774380, errors=) at
>>>> src/agg_py_transforms.cpp:22
>>>> #13 0xfd7ff4a32e7c in _path_module::update_path_extents
>>>> (this=, args=...) at src/path.cpp:380
>>
>> So it's in transforms-related code, but we can't see the locals. First
>> I'd try to recompile without optimizations and (hoping it still crashes)
>> inspect the local variables in these frames in gdb. Or maybe make the
>> functions print out their arguments and any other relevant locals.
>>
>> --
>> Jouni K. Seppänen
>> http://www.iki.fi/jks
>>
>>
>> --
>> Colocation vs. Managed Hosting
>> A question and answer guide to determining the best fit
>> for your organization - today and in the future.
>> http://p.sf.net/sfu/internap-sfd2d
>> ___
>> Matplotlib-users mailing list
>> Matplotlib-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>
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Re: [Matplotlib-users] 3d Surface-Contour Plot
On Mon, Mar 14, 2011 at 9:05 AM, herbie13 wrote: > > Hello, > > I basically have a Chi-Squared distribution that is dependent on 3 > variables. > eg. X2(x, y, z) > > What I would like to do is be able to plot the chi-squared + 1 surface in > 3-dimensions. > eg. I would like to have the three axes as x, y and z. and then have a > surface (its going to look like a closed blob effectively) that maps the > chi-squared plus one surface. > > I have no idea how to do this though. Is it possible? any ideas? > I think matplotlib is relatively limited in its 3D capabilities. I would suggest trying Mayavi2 with a contour3d[1] or a volume[2,3]. Look here[4] for many examples. [1] http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/auto/mlab_helper_functions.html#enthought.mayavi.mlab.contour3d [2] http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/auto/example_chemistry.html#example-chemistry [3] http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/auto/example_protein.html#example-protein [4] http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/auto/examples.html -- Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Bug in xscale? Or wrong way to plot log x-axis scale with negative values?
Hi all,
I'm plotting data which extent, in x, from -1000 to 1000. But I'm only
interested in the values between x = -1 and 0.
I also want to plot on an x log scale. But since the x-values are negative,
I cannot use xscale("log"). I can use xscale("symlog") though and this is
the behaviour I want.
Unfortunately, "symlog" seems to be broken. I cannot use the linthreshx
argument with a value of less then 2 (the default?). But since I'm
interested in x values from -1 to 0, I have to use that argument and set it
to something like 1e-5 or even smaller.
If I set linthreshx to something smaller then 1, the plot breaks. Here is a
simple example, taken from
http://stackoverflow.com/questions/3305865/what-is-the-difference-between-log-and-symlog
> import numpy
> from matplotlib import pyplot
>
> # Enable interactive mode
> pyplot.ion()
>
> # Draw the grid lines
> pyplot.grid(True)
>
> # Numbers from -50 to 50, with 0.1 as step
> xdomain = numpy.arange(-50,50, 0.1)
>
> # Plots a simple linear function 'f(x) = x'
> pyplot.plot(xdomain, xdomain)
> # Plots 'sin(x)'
> pyplot.plot(xdomain, numpy.sin(xdomain))
>
> pyplot.xscale('symlog', linthreshx=0.1)
>
The problem seems to be that, on the x-axis, 0 is actually 10^0 = 1, not 0.
Putting something smaller then 1 will make the line go back and the axis
values are wrong (when hovering with the mouse and getting the x value).
I might not be using the right tool though, but how to achieve what I want?
I want the x axis to look like:
-10^2-10^1-10^0 -10^-1-10^-2-10^-3 ... [up to my
defined minimum exponent] ... 10^-310^-210^-110^010^1
10^2
Thank you
Nicolas
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[Matplotlib-users] 3D surface: Updating data?
Hi, I've been using matplotlib for 2D graphing since two years. Data (3D array) is created with a Fortran program and ploted using imshow() at a particular plane. 3D data is created at each time iteration and saved in a file. For the plotting part, a first imshow() is called with zero values to create the graph and some text is displayed to describe the graph. Then the python script read the 3D data and update the graphic using set_data(). That way, only the "background" image is updated and not the entire graph, resulting in a faster drawing. At each iteration, a png is saved, giving the possibility to create a movie of the time evolution. I would like now to replace the 2D imshow() with the 3D surface_plot(). Saddly, I cannot find a 3D equivalent to set_data(). I get the following error : > Traceback (most recent call last): > File "./src/affichage/affichage_3DE.py", line 450, in updatefig > im_ez.set_data(Z) > File "/usr/lib/python2.4/site-packages/matplotlib/art3d.py", line 47, in > __getattr__ > return getattr(self.__dict__['_wrapped'], k) > AttributeError: PolyCollection instance has no attribute 'set_data' So my question is: Is there a equivalent of set_data() for surface_plot()? Thank you very much. Nicolas - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] 3D surface: Updating data?
Anyone? :( Message original Sujet: 3D surface: Updating data? Date: Thu, 21 Dec 2006 11:28:43 -0500 De: Nicolas Bigaouette <[EMAIL PROTECTED]> Pour: matplotlib-users@lists.sourceforge.net Hi, I've been using matplotlib for 2D graphing since two years. Data (3D array) is created with a Fortran program and ploted using imshow() at a particular plane. 3D data is created at each time iteration and saved in a file. For the plotting part, a first imshow() is called with zero values to create the graph and some text is displayed to describe the graph. Then the python script read the 3D data and update the graphic using set_data(). That way, only the "background" image is updated and not the entire graph, resulting in a faster drawing. At each iteration, a png is saved, giving the possibility to create a movie of the time evolution. I would like now to replace the 2D imshow() with the 3D surface_plot(). Saddly, I cannot find a 3D equivalent to set_data(). I get the following error : > Traceback (most recent call last): > File "./src/affichage/affichage_3DE.py", line 450, in updatefig > im_ez.set_data(Z) > File "/usr/lib/python2.4/site-packages/matplotlib/art3d.py", line 47, in > __getattr__ > return getattr(self.__dict__['_wrapped'], k) > AttributeError: PolyCollection instance has no attribute 'set_data' So my question is: Is there a equivalent of set_data() for surface_plot()? Thank you very much. Nicolas - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Subplot order
Hi, I want to compare data and I am doing so with subplots. Ideally, I would like the subplot command to fill the columns before filling the rows as it is doing right now. Now: subpot(221) = 1st row, 1st column subpot(222) = 1st row, 2nd column subpot(223) = 2nd row, 1st column subpot(224) = 2nd row, 2nd column I'd like : subpot(221) = 1st row, 1st column subpot(222) = 2nd row, 1st column subpot(223) = 1st row, 2nd column subpot(224) = 2nd row, 2nd column Anyone knows if this is possible? Thank you. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
