Re: [Matplotlib-users] How matplotlib got me a job
Patrick Marsh, on 2012-02-07 13:58, wrote: As I continue to mature as a Python person, I want to give back explicitly to the community that's given so much to me. The problem is, I don't know how. I'm intimidated by the awesomeness of what I see being done around me that I don't even know where to begin. How does one even begin to learn how to understand the deep intricacies of MPL, Numpy, and Scipy so that I'd begin to develop a comfort level that would allow me to begin to actively contribute? I know pretty much everyone on these listservs, including myself, is busy. (I'm in the midst of a 30-day PhD General Exam, and probably shouldn't even be reading the listservs and/or typing this email! *wink*) But if there are those out there that are willing to take a little time and invest in me, and I'm sure there are others like me, I'd gladly become an active contributor instead of a lurker. One simple, minimally intimidating way to contribute is by making improvements to the documentation. Here's a relevant pitch I just made on the IPython lists about how easy, yet valuable such improvements can be. http://mail.scipy.org/pipermail/ipython-user/2012-February/009428.html Another would be to send the colleagues whom your helping here to these lists, that way any effort you put in to help them has a good chance of helping others, thanks to search engines and archives. Yet another would be to go through some the active issues on the tracker and trying to make a test for them. Yet another still would be to test the various active pull requests - and confirm that the fixes or new functionality they provide actually work - look through patches and ask questions - we have a lot PRs that get very few eyes or comments on them (Last [academic] year, I consciously made an effort to be more active on this list, and though I haven't pitched in as much lately, perhaps the rest of this year I should focus my efforts on incoming PRs) Anyways, I know this email is a tad on the long side, and a little off the original topic, so if you're still reading, thanks! This is something that's been weighing on me for a few months now, and I thought Ben's exultation of the benefits of the community might be a good time to open up. I'm still rather enjoying this whole thread, thanks for opening up. I got worried how relatively quiet it's been here for a few months, and glad we're starting to buck that trend. best, -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How matplotlib got me a job
On 2/8/12 2:53 AM, Paul Ivanov wrote: Patrick Marsh, on 2012-02-07 13:58, wrote: As I continue to mature as a Python person, I want to give back explicitly to the community that's given so much to me. The problem is, I don't know how. I'm intimidated by the awesomeness of what I see being done around me that I don't even know where to begin. How does one even begin to learn how to understand the deep intricacies of MPL, Numpy, and Scipy so that I'd begin to develop a comfort level that would allow me to begin to actively contribute? I know pretty much everyone on these listservs, including myself, is busy. (I'm in the midst of a 30-day PhD General Exam, and probably shouldn't even be reading the listservs and/or typing this email! *wink*) But if there are those out there that are willing to take a little time and invest in me, and I'm sure there are others like me, I'd gladly become an active contributor instead of a lurker. One simple, minimally intimidating way to contribute is by making improvements to the documentation. Here's a relevant pitch I just made on the IPython lists about how easy, yet valuable such improvements can be. http://mail.scipy.org/pipermail/ipython-user/2012-February/009428.html Another would be to send the colleagues whom your helping here to these lists, that way any effort you put in to help them has a good chance of helping others, thanks to search engines and archives. Yet another would be to go through some the active issues on the tracker and trying to make a test for them. Yet another still would be to test the various active pull requests - and confirm that the fixes or new functionality they provide actually work - look through patches and ask questions - we have a lot PRs that get very few eyes or comments on them (Last [academic] year, I consciously made an effort to be more active on this list, and though I haven't pitched in as much lately, perhaps the rest of this year I should focus my efforts on incoming PRs) Another big way we've seen new people contribute to the Sage community is to answer questions on the ask.sagemath.org site. Scipy has a similar ask.scipy.org site, but it seems relatively quiet. Jason -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] add a single x tick label
Hi, I have a plot of a time series and I would like to add a single extra tick mark and label to the plot in a different color to the already existing tick marks. Is this possible?? Thanks, D -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Partial coloring of text in matplotlib
What can be done with the current Matplotlib is to use the offset boxes. Here is a modified version of a code snippet from http://abitofpythonabitofastronomy.blogspot.com/2009/05/mpl-multicolor-text.html Regards, -JJ from matplotlib.offsetbox import HPacker, TextArea, AnnotationBbox f = figure(1) ax = f.add_subplot(111) txt1 = TextArea(A$^3$, textprops=dict(color=r, size=150)) txt2 = TextArea(gb, textprops=dict(color=k, size=150)) txt = HPacker(children=[txt1, txt2], align=baseline, pad=0, sep=0) bbox = AnnotationBbox(txt, xy=(0.5, 0.5), xycoords='data', frameon=False, box_alignment=(0.5, 0.5), # alignment center, center ) ax.add_artist(bbox) show() On Wed, Feb 8, 2012 at 7:44 AM, Yann Tambouret yannp...@bu.edu wrote: Along the lines of Mike's suggestion, I thought this could be done using Latex. I posted an answer on SO with an example of doing this, but it seems only to work with postscript backend. Other backends override the color with the mpl text color setting. Is there a way to prevent this override? For example don't try to use 'PS' backend, and look at hte figure interactively. It defaults to black. http://stackoverflow.com/a/9185143/717357 -Yann On Tue, Feb 7, 2012 at 4:46 PM, Paul Ivanov pivanov...@gmail.com wrote: Benjamin Root, on 2012-02-07 13:46, wrote: Also, how deep should this rabbit hole go? I could imagine one could want this for title() and figtitle(). Maybe it would be best to implement this at the Text() constructor level? For this reason, I would discourage even implementing such functionality in the core of matplotlib. This functionality doesn't strike me as something that ought to be available everywhere by default - if someone needs it, they can implement it as follows: - import matplotlib.pyplot as plt from matplotlib import transforms def rainbow_text(x,y,ls,lc,**kw): Take a list of strings ``ls`` and colors ``lc`` and place them next to each other, with text ls[i] being shown in color lc[i]. This example shows how to do both vertical and horizontal text, and will pass all keyword arguments to plt.text, so you can set the font size, family, etc. t = plt.gca().transData fig = plt.gcf() plt.show() #horizontal version for s,c in zip(ls,lc): text = plt.text(x,y, +s+ ,color=c, transform=t, **kw) text.draw(fig.canvas.get_renderer()) ex = text.get_window_extent() t = transforms.offset_copy(text._transform, x=ex.width, units='dots') #vertical version for s,c in zip(ls,lc): text = plt.text(x,y, +s+ ,color=c, transform=t, rotation=90,va='bottom',ha='center',**kw) text.draw(fig.canvas.get_renderer()) ex = text.get_window_extent() t = transforms.offset_copy(text._transform, y=ex.height, units='dots') plt.figure() rainbow_text(0.5,0.5,all unicorns poop rainbows ! ! !.split(), ['red', 'orange', 'brown', 'green', 'blue', 'purple', 'black'], size=40) best, -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net
[Matplotlib-users] Strange plot_date problem
Hi, I'm experiencing a very strange problem with plot_date that I can't figure out. pyplot.plot_date(pylab.date2num(dates),diff,'b-',label='Chained') pyplot.show() dates, naturally, is a list of dates and diff is an array of floats. With my script, this fails. But if I interactively enter dates and diff and then type the above commands, it works with no problems. Any ideas or suggestions? The traceback follows. Thanks, Ted Exception in Tkinter callback Traceback (most recent call last): File /usr/lib/python2.6/lib-tk/Tkinter.py, line 1413, in __call__ return self.func(*args) File /usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py, line 245, in resize self.show() File /usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py, line 248, in draw FigureCanvasAgg.draw(self) File /usr/lib/pymodules/python2.6/matplotlib/backends/backend_agg.py, line 394, in draw self.figure.draw(self.renderer) File /usr/lib/pymodules/python2.6/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/pymodules/python2.6/matplotlib/figure.py, line 798, in draw func(*args) File /usr/lib/pymodules/python2.6/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/pymodules/python2.6/matplotlib/axes.py, line 1946, in draw a.draw(renderer) File /usr/lib/pymodules/python2.6/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/pymodules/python2.6/matplotlib/axis.py, line 971, in draw tick_tups = [ t for t in self.iter_ticks()] File /usr/lib/pymodules/python2.6/matplotlib/axis.py, line 904, in iter_ticks majorLocs = self.major.locator() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 743, in __call__ self.refresh() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 752, in refresh dmin, dmax = self.viewlim_to_dt() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 524, in viewlim_to_dt return num2date(vmin, self.tz), num2date(vmax, self.tz) File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 289, in num2date if not cbook.iterable(x): return _from_ordinalf(x, tz) File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 203, in _from_ordinalf dt = datetime.datetime.fromordinal(ix) ValueError: ordinal must be = 1 -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] add a single x tick label
On Wed, Feb 8, 2012 at 8:42 AM, David Craig dcdavem...@gmail.com wrote:
Hi, I have a plot of a time series and I would like to add a single
extra tick mark and label to the plot in a different color to the
already existing tick marks. Is this possible??
Thanks,
It's fairly easy to do if you want to set the tick locations and labels
youself (see http://matplotlib.sourceforge.net/users/artists.html near the
end for an overview of the mpl containers like Tick and the attributes they
contain).
import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots(1)
ax.plot(np.random.randn(10,2)*10)
locs = np.arange(2, 10, 2)
labels = ['%d'%loc for loc in locs]
ticks, labels = plt.xticks(locs, labels)
i = 2
# tick1line and tick2line are matplotlib.lines.Line2D instances
ticks[i].tick1line.set_color('red')
ticks[i].tick2line.set_color('red')
labels[i].set_color('red')
plt.show()
If you want to add a tick using the existing mpl auto tick locating and
labeling infrastructure, it is also possible but you will need to subclass
the tick locator.
JDH
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Re: [Matplotlib-users] Strange plot_date problem
If it hasn't been fixed, is there a workaround? On 02/08/2012 10:42 AM, Ted To wrote: I believe I have traced it to some axhline and axis commands and this is apparently an old problem. Does it work with version 1.1.0? I have 1.0.1 installed on a debian system. On 02/08/2012 09:47 AM, Ted To wrote: Hi, I'm experiencing a very strange problem with plot_date that I can't figure out. pyplot.plot_date(pylab.date2num(dates),diff,'b-',label='Chained') pyplot.show() dates, naturally, is a list of dates and diff is an array of floats. With my script, this fails. But if I interactively enter dates and diff and then type the above commands, it works with no problems. Any ideas or suggestions? The traceback follows. Thanks, Ted Exception in Tkinter callback Traceback (most recent call last): File /usr/lib/python2.6/lib-tk/Tkinter.py, line 1413, in __call__ return self.func(*args) File /usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py, line 245, in resize self.show() File /usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py, line 248, in draw FigureCanvasAgg.draw(self) File /usr/lib/pymodules/python2.6/matplotlib/backends/backend_agg.py, line 394, in draw self.figure.draw(self.renderer) File /usr/lib/pymodules/python2.6/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/pymodules/python2.6/matplotlib/figure.py, line 798, in draw func(*args) File /usr/lib/pymodules/python2.6/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/pymodules/python2.6/matplotlib/axes.py, line 1946, in draw a.draw(renderer) File /usr/lib/pymodules/python2.6/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/pymodules/python2.6/matplotlib/axis.py, line 971, in draw tick_tups = [ t for t in self.iter_ticks()] File /usr/lib/pymodules/python2.6/matplotlib/axis.py, line 904, in iter_ticks majorLocs = self.major.locator() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 743, in __call__ self.refresh() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 752, in refresh dmin, dmax = self.viewlim_to_dt() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 524, in viewlim_to_dt return num2date(vmin, self.tz), num2date(vmax, self.tz) File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 289, in num2date if not cbook.iterable(x): return _from_ordinalf(x, tz) File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 203, in _from_ordinalf dt = datetime.datetime.fromordinal(ix) ValueError: ordinal must be = 1 -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Strange plot_date problem
On Wed, Feb 8, 2012 at 10:06 AM, Ted To rainexpec...@theo.to wrote: If it hasn't been fixed, is there a workaround? On 02/08/2012 10:42 AM, Ted To wrote: I believe I have traced it to some axhline and axis commands and this is apparently an old problem. Does it work with version 1.1.0? I have 1.0.1 installed on a debian system. Can you print(dates) before calling plot in the environment in which it fails and post the output here. JDH -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Strange plot_date problem
On 02/08/2012 11:17 AM, John Hunter wrote: On Wed, Feb 8, 2012 at 10:06 AM, Ted To rainexpec...@theo.to mailto:rainexpec...@theo.to wrote: If it hasn't been fixed, is there a workaround? On 02/08/2012 10:42 AM, Ted To wrote: I believe I have traced it to some axhline and axis commands and this is apparently an old problem. Does it work with version 1.1.0? I have 1.0.1 installed on a debian system. Can you print(dates) before calling plot in the environment in which it fails and post the output here. JDH Sure, the commands where it crashes and the output are: print dates pyplot.axis([0, len(prices.label[0]), -1.5, 1.5]) pyplot.axhline(-.5,color='r') pyplot.axhline(.5,color='r') pyplot.axhline(0,color='.75') diff = (fisherChained-tornqvistChained)*100 pyplot.plot_date(pylab.date2num(dates),diff,'b-',label='Chained') pyplot.setp(pyplot.gca().get_xmajorticklabels(),rotation=30) pyplot.savefig(city+agg+'Diffs.pdf') [datetime.date(1992, 12, 12), datetime.date(1992, 12, 19), datetime.date(1992, 12, 26), datetime.date(1993, 1, 2), datetime.date(1993, 1, 9), datetime.date(1993, 1, 16), datetime.date(1993, 1, 23), datetime.date(1993, 1, 30), datetime.date(1993, 2, 6), datetime.date(1993, 2, 13), datetime.date(1993, 2, 20), datetime.date(1993, 2, 27), datetime.date(1993, 3, 6), datetime.date(1993, 3, 13), datetime.date(1993, 3, 20), datetime.date(1993, 3, 27), datetime.date(1993, 4, 3), datetime.date(1993, 4, 10), datetime.date(1993, 4, 17), datetime.date(1993, 4, 24), datetime.date(1993, 5, 1), datetime.date(1993, 5, 8), datetime.date(1993, 5, 15), datetime.date(1993, 5, 22), datetime.date(1993, 5, 29), datetime.date(1993, 6, 5), datetime.date(1993, 6, 12), datetime.date(1993, 6, 19), datetime.date(1993, 6, 26), datetime.date(1993, 7, 3), datetime.date(1993, 7, 10), datetime.date(1993, 7, 17), datetime.date(1993, 7, 24), datetime.date(1993, 7, 31), datetime.date(1993, 8, 7), datetime.date(1993, 8, 14), datetime.date(1993, 8, 21), datetime.date(1993, 8, 28), datetime.date(1993, 9, 4), datetime.date(1993, 9, 11), datetime.date(1993, 9, 18), datetime.date(1993, 9, 25), datetime.date(1993, 10, 2), datetime.date(1993, 10, 9), datetime.date(1993, 10, 16), datetime.date(1993, 10, 23), datetime.date(1993, 10, 30), datetime.date(1993, 11, 6), datetime.date(1993, 11, 13), datetime.date(1993, 11, 20), datetime.date(1993, 11, 27), datetime.date(1993, 12, 4), datetime.date(1993, 12, 11), datetime.date(1993, 12, 18), datetime.date(1993, 12, 25), datetime.date(1994, 1, 1), datetime.date(1994, 1, 8), datetime.date(1994, 1, 15), datetime.date(1994, 1, 22), datetime.date(1994, 1, 29), datetime.date(1994, 2, 5), datetime.date(1994, 2, 12), datetime.date(1994, 2, 19), datetime.date(1994, 2, 26), datetime.date(1994, 3, 5), datetime.date(1994, 3, 12), datetime.date(1994, 3, 19), datetime.date(1994, 3, 26), datetime.date(1994, 4, 2), datetime.date(1994, 4, 9), datetime.date(1994, 4, 16), datetime.date(1994, 4, 23), datetime.date(1994, 4, 30), datetime.date(1994, 5, 7), datetime.date(1994, 5, 14), datetime.date(1994, 5, 21), datetime.date(1994, 5, 28), datetime.date(1994, 6, 4), datetime.date(1994, 6, 11), datetime.date(1994, 6, 18), datetime.date(1994, 6, 25), datetime.date(1994, 7, 2), datetime.date(1994, 7, 9), datetime.date(1994, 7, 16), datetime.date(1994, 7, 23), datetime.date(1994, 7, 30), datetime.date(1994, 8, 6), datetime.date(1994, 8, 13), datetime.date(1994, 8, 20), datetime.date(1994, 8, 27), datetime.date(1994, 9, 3), datetime.date(1994, 9, 10), datetime.date(1994, 9, 17), datetime.date(1994, 9, 24), datetime.date(1994, 10, 1), datetime.date(1994, 10, 8), datetime.date(1994, 10, 15), datetime.date(1994, 10, 22), datetime.date(1994, 10, 29), datetime.date(1994, 11, 5), datetime.date(1994, 11, 12), datetime.date(1994, 11, 19), datetime.date(1994, 11, 26), datetime.date(1994, 12, 3), datetime.date(1994, 12, 10), datetime.date(1994, 12, 17), datetime.date(1994, 12, 24), datetime.date(1994, 12, 31)] Traceback (most recent call last): File makeIndices.py, line 128, in module pyplot.setp(pyplot.gca().get_xmajorticklabels(),rotation=30) File /usr/lib/pymodules/python2.6/matplotlib/axes.py, line 2440, in get_xmajorticklabels self.xaxis.get_majorticklabels()) File /usr/lib/pymodules/python2.6/matplotlib/axis.py, line 1071, in get_majorticklabels ticks = self.get_major_ticks() File /usr/lib/pymodules/python2.6/matplotlib/axis.py, line 1169, in get_major_ticks numticks = len(self.get_major_locator()()) File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 743, in __call__ self.refresh() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 752, in refresh dmin, dmax = self.viewlim_to_dt() File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 524, in viewlim_to_dt return num2date(vmin, self.tz), num2date(vmax, self.tz) File /usr/lib/pymodules/python2.6/matplotlib/dates.py, line 289, in num2date if not
Re: [Matplotlib-users] Strange plot_date problem
On Wed, Feb 8, 2012 at 10:24 AM, Ted To rainexpec...@theo.to wrote: On 02/08/2012 11:17 AM, John Hunter wrote: On Wed, Feb 8, 2012 at 10:06 AM, Ted To rainexpec...@theo.to mailto:rainexpec...@theo.to wrote: If it hasn't been fixed, is there a workaround? On 02/08/2012 10:42 AM, Ted To wrote: I believe I have traced it to some axhline and axis commands and this is apparently an old problem. Does it work with version 1.1.0? I have 1.0.1 installed on a debian system. Can you print(dates) before calling plot in the environment in which it fails and post the output here. JDH Sure, the commands where it crashes and the output are: print dates pyplot.axis([0, len(prices.label[0]), -1.5, 1.5]) OK, here is where the problem is. In the plt.axis call you are setting the x-axis min to 0 which is not a legal date value. I suggest letting the x-axis take care of itself, and set the y-axis limits with plt.ylim(-1.5, 1.5) JDH -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Partial coloring of text in matplotlib
This is the solution which requires the least modification to the original text inserting functions. The only drawback is like you said, it only works with ps backend. Any idea if this could be generalized for other backends? On Tue, Feb 7, 2012 at 3:44 PM, Yann Tambouret yannp...@bu.edu wrote: Along the lines of Mike's suggestion, I thought this could be done using Latex. I posted an answer on SO with an example of doing this, but it seems only to work with postscript backend. Other backends override the color with the mpl text color setting. Is there a way to prevent this override? For example don't try to use 'PS' backend, and look at hte figure interactively. It defaults to black. http://stackoverflow.com/a/9185143/717357 -Yann On Tue, Feb 7, 2012 at 4:46 PM, Paul Ivanov pivanov...@gmail.com wrote: Benjamin Root, on 2012-02-07 13:46, wrote: Also, how deep should this rabbit hole go? I could imagine one could want this for title() and figtitle(). Maybe it would be best to implement this at the Text() constructor level? For this reason, I would discourage even implementing such functionality in the core of matplotlib. This functionality doesn't strike me as something that ought to be available everywhere by default - if someone needs it, they can implement it as follows: - import matplotlib.pyplot as plt from matplotlib import transforms def rainbow_text(x,y,ls,lc,**kw): Take a list of strings ``ls`` and colors ``lc`` and place them next to each other, with text ls[i] being shown in color lc[i]. This example shows how to do both vertical and horizontal text, and will pass all keyword arguments to plt.text, so you can set the font size, family, etc. t = plt.gca().transData fig = plt.gcf() plt.show() #horizontal version for s,c in zip(ls,lc): text = plt.text(x,y, +s+ ,color=c, transform=t, **kw) text.draw(fig.canvas.get_renderer()) ex = text.get_window_extent() t = transforms.offset_copy(text._transform, x=ex.width, units='dots') #vertical version for s,c in zip(ls,lc): text = plt.text(x,y, +s+ ,color=c, transform=t, rotation=90,va='bottom',ha='center',**kw) text.draw(fig.canvas.get_renderer()) ex = text.get_window_extent() t = transforms.offset_copy(text._transform, y=ex.height, units='dots') plt.figure() rainbow_text(0.5,0.5,all unicorns poop rainbows ! ! !.split(), ['red', 'orange', 'brown', 'green', 'blue', 'purple', 'black'], size=40) best, -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Gökhan -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] use the github version on a linux box
I was trying to test the patch mike put in to fix the single pixel plotting issue, but just realized that this was a Mac version. Can I use it on a linux box? How? Thanks, Chris -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
On Wed, Feb 8, 2012 at 11:06 AM, Chris plut...@gmail.com wrote: I was trying to test the patch mike put in to fix the single pixel plotting issue, but just realized that this was a Mac version. Can I use it on a linux box? How? These instructions are for an ubuntu based system -- if you are on a different version of linux you may need different commands to install git and the mpl build dependencies # install git to checkout the mpl src code sudo apt-get install git # install the pre-reqs to build matplotlib from source sudo apt-get build-dep python-matplotlib # get the latest released branch of matplotlib git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git # cd into the matplotlib directory and create a branch off of the release branch to test cd matplotlib.git git checkout -b mdboom-pixel_marker v1.1.x # pull in Michael's changes git pull https://github.com/mdboom/matplotlib.git pixel_marker # build the matplotlib source code python setup.py build # install it sudo python setup.py install -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
Thanks John. Since I already have a running copy of mpl, I skipped to the git clone step, but get this error: Permission denied (publickey). fatal: The remote end hung up unexpectedly I'm a complete noob on git, so please bear with me. - Chris On Wed, Feb 8, 2012 at 9:31 AM, John Hunter jdh2...@gmail.com wrote: On Wed, Feb 8, 2012 at 11:06 AM, Chris plut...@gmail.com wrote: I was trying to test the patch mike put in to fix the single pixel plotting issue, but just realized that this was a Mac version. Can I use it on a linux box? How? These instructions are for an ubuntu based system -- if you are on a different version of linux you may need different commands to install git and the mpl build dependencies # install git to checkout the mpl src code sudo apt-get install git # install the pre-reqs to build matplotlib from source sudo apt-get build-dep python-matplotlib # get the latest released branch of matplotlib git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git # cd into the matplotlib directory and create a branch off of the release branch to test cd matplotlib.git git checkout -b mdboom-pixel_marker v1.1.x # pull in Michael's changes git pull https://github.com/mdboom/matplotlib.git pixel_marker # build the matplotlib source code python setup.py build # install it sudo python setup.py install -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
On Wed, Feb 8, 2012 at 11:39 AM, Chris plut...@gmail.com wrote: Thanks John. Since I already have a running copy of mpl, I skipped to the git clone step, but get this error: Permission denied (publickey). fatal: The remote end hung up unexpectedly I'm a complete noob on git, so please bear with me. I think I should have pointed you to the read only address. Try this: git pull git://github.com/mdboom/matplotlib.git pixel_marker JDH -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
This time the error is: fatal: Not a git repository (or any of the parent directories): .git I guess that I have not be able to establish a local git tree since the command git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. - Chris On Wed, Feb 8, 2012 at 9:48 AM, John Hunter jdh2...@gmail.com wrote: On Wed, Feb 8, 2012 at 11:39 AM, Chris plut...@gmail.com wrote: Thanks John. Since I already have a running copy of mpl, I skipped to the git clone step, but get this error: Permission denied (publickey). fatal: The remote end hung up unexpectedly I'm a complete noob on git, so please bear with me. I think I should have pointed you to the read only address. Try this: git pull git://github.com/mdboom/matplotlib.git pixel_marker JDH -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
On Wed, Feb 8, 2012 at 12:58 PM, Chris plut...@gmail.com wrote: This time the error is: fatal: Not a git repository (or any of the parent directories): .git I guess that I have not be able to establish a local git tree since the command git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. - Chris I don't think you want the .git at the very end of the clone command. That just tells get where (i.e. new directory) to put the repo. -Tony On Wed, Feb 8, 2012 at 9:48 AM, John Hunter jdh2...@gmail.com wrote: On Wed, Feb 8, 2012 at 11:39 AM, Chris plut...@gmail.com wrote: Thanks John. Since I already have a running copy of mpl, I skipped to the git clone step, but get this error: Permission denied (publickey). fatal: The remote end hung up unexpectedly I'm a complete noob on git, so please bear with me. I think I should have pointed you to the read only address. Try this: git pull git://github.com/mdboom/matplotlib.git pixel_marker JDH -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
On Wed, Feb 8, 2012 at 11:58 AM, Chris plut...@gmail.com wrote: This time the error is: fatal: Not a git repository (or any of the parent directories): .git I guess that I have not be able to establish a local git tree since the command git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. I see, that is also the ssh version. Here is the http read only version. Updated my complete instructions: # install git to checkout the mpl src code sudo apt-get install git # install the pre-reqs to build matplotlib from source sudo apt-get build-dep python-matplotlib # get the latest released branch of matplotlib git clone git://github.com/matplotlib/matplotlib.git matplotlib.git # cd into the matplotlib directory and create a branch off of the release branch to test cd matplotlib.git git checkout -b mdboom-pixel_marker v1.1.x # pull in Michael's changes git pull git://github.com/mdboom/matplotlib.git pixel_marker # build the matplotlib source code python setup.py build # install it sudo python setup.py install -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
On Wed, Feb 8, 2012 at 12:06 PM, Tony Yu tsy...@gmail.com wrote: git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. - Chris I don't think you want the .git at the very end of the clone command. That just tells get where (i.e. new directory) to put the repo. I don't think that is the problem. I just add the .git extension because the default is to check out a directory called matplotlib which if it is located in the path you are running or testing from, will confuse the import. So I just add some extension so python won't confuse the mpl src dir (matplotlib.git) with the mpl package (matplotlib). -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
New error at `git checkout -b mdboom-pixel_marker v1.1.x': fatal: git checkout: updating paths is incompatible with switching branches. Did you intend to checkout 'v1.1.x' which can not be resolved as commit? - Chris On Wed, Feb 8, 2012 at 10:13 AM, John Hunter jdh2...@gmail.com wrote: On Wed, Feb 8, 2012 at 12:06 PM, Tony Yu tsy...@gmail.com wrote: git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. - Chris I don't think you want the .git at the very end of the clone command. That just tells get where (i.e. new directory) to put the repo. I don't think that is the problem. I just add the .git extension because the default is to check out a directory called matplotlib which if it is located in the path you are running or testing from, will confuse the import. So I just add some extension so python won't confuse the mpl src dir (matplotlib.git) with the mpl package (matplotlib). -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
I interpreted the public key error (as did others) to be an ssh issue. For a publicly readable approach this seems to work: [dhcp-90-166:python/matplotlib/git] dale% git clone git://github.com/matplotlib/matplotlib.git Cloning into matplotlib... remote: Counting objects: 57725, done. remote: Compressing objects: 100% (13597/13597), done. remote: Total 57725 (delta 44284), reused 57317 (delta 43924) Receiving objects: 100% (57725/57725), 81.69 MiB | 2.67 MiB/s, done. Resolving deltas: 100% (44284/44284), done. [dhcp-90-166:python/matplotlib/git] dale% ll total 0 drwxr-xr-x 3 dale staff 102 Feb 8 13:20 . drwxr-xr-x 5 dale staff 170 Feb 8 13:08 .. drwxr-xr-x 33 dale staff 1122 Feb 8 13:21 matplotlib [dhcp-90-166:python/matplotlib/git] dale% -Dale On Feb 8, 2012, at 13:13 , John Hunter wrote: On Wed, Feb 8, 2012 at 12:06 PM, Tony Yu tsy...@gmail.com wrote: git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. - Chris I don't think you want the .git at the very end of the clone command. That just tells get where (i.e. new directory) to put the repo. I don't think that is the problem. I just add the .git extension because the default is to check out a directory called matplotlib which if it is located in the path you are running or testing from, will confuse the import. So I just add some extension so python won't confuse the mpl src dir (matplotlib.git) with the mpl package (matplotlib). -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
On Wed, Feb 8, 2012 at 1:20 PM, Chris plut...@gmail.com wrote: New error at `git checkout -b mdboom-pixel_marker v1.1.x': fatal: git checkout: updating paths is incompatible with switching branches. Did you intend to checkout 'v1.1.x' which can not be resolved as commit? - Chris That looks like something I've done before without issue. Maybe you're on an older version of git. In any case, you can break this up into two steps # change to maintenance branch git checkout v1.1.x # create new branch based on current checkout git checkout -b mdboom-pixel_marker Then continue as John instructed. -Tony On Wed, Feb 8, 2012 at 10:13 AM, John Hunter jdh2...@gmail.com wrote: On Wed, Feb 8, 2012 at 12:06 PM, Tony Yu tsy...@gmail.com wrote: git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. - Chris I don't think you want the .git at the very end of the clone command. That just tells get where (i.e. new directory) to put the repo. I don't think that is the problem. I just add the .git extension because the default is to check out a directory called matplotlib which if it is located in the path you are running or testing from, will confuse the import. So I just add some extension so python won't confuse the mpl src dir (matplotlib.git) with the mpl package (matplotlib). -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] use the github version on a linux box
Thanks Tony and JDH, problem resolved and now I can try to compile. - Chris On Wed, Feb 8, 2012 at 10:41 AM, Tony Yu tsy...@gmail.com wrote: On Wed, Feb 8, 2012 at 1:20 PM, Chris plut...@gmail.com wrote: New error at `git checkout -b mdboom-pixel_marker v1.1.x': fatal: git checkout: updating paths is incompatible with switching branches. Did you intend to checkout 'v1.1.x' which can not be resolved as commit? - Chris That looks like something I've done before without issue. Maybe you're on an older version of git. In any case, you can break this up into two steps # change to maintenance branch git checkout v1.1.x # create new branch based on current checkout git checkout -b mdboom-pixel_marker Then continue as John instructed. -Tony On Wed, Feb 8, 2012 at 10:13 AM, John Hunter jdh2...@gmail.com wrote: On Wed, Feb 8, 2012 at 12:06 PM, Tony Yu tsy...@gmail.com wrote: git clone g...@github.com:matplotlib/matplotlib.git matplotlib.git did not go through. - Chris I don't think you want the .git at the very end of the clone command. That just tells get where (i.e. new directory) to put the repo. I don't think that is the problem. I just add the .git extension because the default is to check out a directory called matplotlib which if it is located in the path you are running or testing from, will confuse the import. So I just add some extension so python won't confuse the mpl src dir (matplotlib.git) with the mpl package (matplotlib). -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] plot_date again
Hi, Is it possible to force the date ticks to be the same in two different plots? For example, the attached figures cover the same time spans but in one, the data are weekly and the other, monthly. While there is nothing really wrong with different tick marks, aesthetically it would be nice if they were both the same. Thanks, Ted chicagoMonthStoreUPCChainedIndices.pdf Description: Adobe PDF document chicagoWeekStoreUPCChainedIndices.pdf Description: Adobe PDF document -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plot_date again
On Wed, Feb 8, 2012 at 1:12 PM, Ted To rainexpec...@theo.to wrote: Is it possible to force the date ticks to be the same in two different plots? For example, the attached figures cover the same time spans but in one, the data are weekly and the other, monthly. While there is nothing really wrong with different tick marks, aesthetically it would be nice if they were both the same. Yes, just use the sharex keyword to share the x-axis between the two. Not only will they have the same ticks and labels, but when you pan and zoom in one the other moves with it. The example below does not use dates, but it will work with dates just the same. import matplotlib.pyplot as plt import numpy as np fig1 = plt.figure(1) ax1 = fig1.add_subplot(111) ax1.plot(np.random.randn(10,2)*10) fig2 = plt.figure(2) ax2 = fig2.add_subplot(111, sharex=ax1) ax2.plot(np.random.randn(10,2)*10) plt.show() JDH -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plot_date again
On 02/08/2012 02:22 PM, John Hunter wrote: On Wed, Feb 8, 2012 at 1:12 PM, Ted To rainexpec...@theo.to mailto:rainexpec...@theo.to wrote: Is it possible to force the date ticks to be the same in two different plots? For example, the attached figures cover the same time spans but in one, the data are weekly and the other, monthly. While there is nothing really wrong with different tick marks, aesthetically it would be nice if they were both the same. Yes, just use the sharex keyword to share the x-axis between the two. Not only will they have the same ticks and labels, but when you pan and zoom in one the other moves with it. The example below does not use dates, but it will work with dates just the same. import matplotlib.pyplot as plt import numpy as np fig1 = plt.figure(1) ax1 = fig1.add_subplot(111) ax1.plot(np.random.randn(10,2)*10) fig2 = plt.figure(2) ax2 = fig2.add_subplot(111, sharex=ax1) ax2.plot(np.random.randn(10,2)*10) plt.show() JDH Thanks again, worked like a charm! Cheers, Ted -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib tutorial at PyCon US
Hi Mike, Would it possible that after the conference the videos of all talks could be downloaded? It is not possible to download them from last year. Thank you in advance. Cheers, On Thu, Jan 26, 2012 at 1:43 AM, Mike Müller mmuel...@python-academy.dewrote: Hi, I will be giving a matplotlib and a optimization tutorial at PyCon in March. So please point people to it who would like to have a compact introduction to matplotlib. The optimization tutorial gives an overview over this topic. BTW, the early bird deadline is today. Mike Plotting with matplotlib Instructor: Mike Müller Type:Tutorial Audience level:Novice Category:Useful libraries March 8th 9 a.m. – 12:20 p.m. https://us.pycon.org/2012/schedule/presentation/238/ When it comes to plotting with Python many people think about matplotlib. It is widely used and provides a simple interface for creating a wide variety of plots from very simple diagrams to sophisticated animations. This tutorial is a hands-on introduction that teaches the basics of matplotlib. Students will learn how to create publication-ready plots with just a few lines of Python. Faster Python Programs through Optimization --- Instructor: Mike Müller Type:Tutorial Audience level:Experienced Category:Best Practices/Patterns March 7th 9 a.m. – 12:20 p.m. https://us.pycon.org/2012/schedule/presentation/245/ This tutorial provides an overview of techniques to improve the performance of Python programs. The focus is on concepts such as profiling, difference of data structures and algorithms as well as a selection of tools and libraries that help to speed up Python. -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ 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] Course Python for Scientists and Engineers in Chicago
HI Mike, Will be videos available from the course? Thank you in advance. Cheers, On Wed, Jan 25, 2012 at 6:52 AM, Mike Müller mmuel...@python-academy.dewrote: Course Python for Scientists and Engineers in Chicago === There will be a comprehensive Python course for scientists and engineers in Chicago end of February / beginning of March 2012. It consists of a 3-day intro and a 2-day advanced section. Both sections can be taken separately or combined. More details below and here: http://www.dabeaz.com/chicago/science.html Please let friends or colleagues who might be interested in such a course know about it. 3-Day Intro Section --- - Overview of Scientific and Technical Libraries for Python. - Numerical Calculations with NumPy - Storage and Processing of Large Amounts of Data - Graphical Presentation of Scientific Data with matplotlib - Object Oriented Programming for Scientific and Technical Projects - Open Time for Problem Solving 2-Day Advanced Section -- - Extending Python with Other Languages - Unit Testing - Version Control with Mercurial The Details --- The course is hosted by David Beazley (http://www.dabeaz.com). Date: Feb 27 - Mar 2, 2012 Location: Chicago, IL, USA Trainer: Mike Müller Course Language: English Link: http://www.dabeaz.com/chicago/science.html -- Keep Your Developer Skills Current with LearnDevNow! 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-d2d ___ 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
[Matplotlib-users] Missing Segments in Output of imshow()
Hi,
I am experiencing missing segments in the output of imshow(). I draw a
slowly growing line in an array, and then display it. The line is
continuous but in the output, there are segments missing from it. Of
course, if I zoom into the picture (before saving to output), then I can
see the lines. However, if I save directly to a file then the segments are
missing.
Here is a minimal example:
import numpy as np
import matplotlib.pyplot as plt
N = 600
slope = 15
x = np.zeros((N,N))
j = np.arange(N)
i = N/2 - j/slope
for idx in zip(i,j):
x[idx] = 1
plt.imshow(x, interpolation='nearest', cmap=plt.cm.gray_r)
plt.savefig('bug.pdf')
plt.savefig('bug.png')
I have attached an example of the output. In theory, there should be a
continuous line from the left side of the picture to the right side. The
problem seems to occur across backends. Additionally, the thickness of the
segments is not uniform. Some are thinner than the rest. Decreasing the
value of N seems to make the issue go away. Increasing the value of N
makes the problem worse.
Any ideas on what is going on and how I can fix it?
bug.pdf
Description: Adobe PDF document
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Re: [Matplotlib-users] Missing Segments in Output of imshow()
I am experiencing missing segments in the output of imshow() Here is a minimal example: I have attached an example of the output. In theory, there should be a continuous line from the left side of the picture to the right side. The problem seems to occur across backends. Additionally, the thickness of the segments is not uniform. Some are thinner than the rest. Decreasing the value of N seems to make the issue go away. Increasing the value of N makes the problem worse. Any ideas on what is going on and how I can fix it? Imshow scales your geometry according to the figure size, and if you *insist* on having the nearest interpolation, you may lose pixels while drawing, it is as simple as that. No miracles. How to fix it? 1. Use bilinear, or sinc, or any smooth interpolation. 2. Make your figure big enough, say plt.figure(figsize=(14,14)). 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
Re: [Matplotlib-users] Missing Segments in Output of imshow()
On Wednesday, February 8, 2012, Jerzy Karczmarczuk jerzy.karczmarc...@unicaen.fr wrote: I am experiencing missing segments in the output of imshow() Here is a minimal example: I have attached an example of the output. In theory, there should be a continuous line from the left side of the picture to the right side. The problem seems to occur across backends. Additionally, the thickness of the segments is not uniform. Some are thinner than the rest. Decreasing the value of N seems to make the issue go away. Increasing the value of N makes the problem worse. Any ideas on what is going on and how I can fix it? Imshow scales your geometry according to the figure size, and if you *insist* on having the nearest interpolation, you may lose pixels while drawing, it is as simple as that. No miracles. How to fix it? 1. Use bilinear, or sinc, or any smooth interpolation. 2. Make your figure big enough, say plt.figure(figsize=(14,14)). Jerzy Karczmarczuk Agreed. Your example above is basically the equivalent of rasterizing a line (without anti-aliasing) and then down-scaling and possibly causing some stretching due to changes in aspect ratio. Because imshow() is unaware the you are actually drawing a line, the backends can not take advantage of their bag-o-tricks to make it look good. Perhaps the example you provided was an oversimplified version of the problem you are having? Cheers! Ben Root -- 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] Missing Segments in Output of imshow()
Jerzy Karczmarczuk wrote the following on 02/08/2012 05:55 PM: I am experiencing missing segments in the output of imshow() Here is a minimal example: I have attached an example of the output. In theory, there should be a continuous line from the left side of the picture to the right side. The problem seems to occur across backends. Additionally, the thickness of the segments is not uniform. Some are thinner than the rest. Decreasing the value of N seems to make the issue go away. Increasing the value of N makes the problem worse. Any ideas on what is going on and how I can fix it? Imshow scales your geometry according to the figure size, and if you *insist* on having the nearest interpolation, you may lose pixels while drawing, it is as simple as that. No miracles. How to fix it? 1. Use bilinear, or sinc, or any smooth interpolation. 2. Make your figure big enough, say plt.figure(figsize=(14,14)). Taking the image size to (30,30) made all the segments appear, but their thickness was still not uniform. Using some sort of smoothing helped, but it still not displaying what the matrix was specified as: a set of blocks, somewhat resembling a line, all of which are the same color and thickness. Can I have matplotlib show the matrix as I have specified it? Or is that too naive (on my part)? -- 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
