Re: [Matplotlib-users] Fwd: [matplotlib-devel] RFC: candidates for a new default colormap
I opt for B, and adding the matlab-default as secondary. cheers THomas Thomas Sprinzing Dipl.-Ing. (FH) Labor Tiefdruck Studiengang Druck- und Medientechnologie Hochschule der Medien University of Applied Sciences Nobelstr. 10 70569 Stuttgart Telefon: +49 711 8923 2196 www.hdm-stuttgart.de/dt Am 05.06.2015 um 13:20 schrieb Jan Heczko jan.hec...@gmail.com: I'd choose D. A and B are too dark. Also, A-C seem to hide some detail in the simulation of color blindness. On 4 June 2015 at 22:42, Eric Firing efir...@hawaii.edu wrote: I am forwarding a message from Nathaniel Smith which is the start of a long thread on matplotlib-devel http://news.gmane.org/gmane.comp.python.matplotlib.devel related to changes that are in the works for matplotlib, and that are therefore of interest to matplotlib users. Specifically, we will be updating the default color cycle for line plots, and the default colormap for image-type plots, including contourf and pcolormesh. The most important part of Nathaniel's message is the link: https://bids.github.io/colormap/ which has been updated since his first message below. Note that we are looking for a new *default* colormap--the one that will be used if you have not specified an alternative in your matplotlibrc file, your function keyword arguments, or anywhere else. It does not in any way limit your ability to specify a colormap that you prefer for a particular application, or as your own default. Rather, it should be a good all-around choice, that works reasonably well in a variety of applications, and that most people will find *comfortable* as well as functional. It will become part of matplotlib's look; it should attract rather than repel prospective and new users. We have some consensus about some of the other criteria, and these are coded into the tool that Nathaniel and Stéfan have developed for generating colormaps. So far, 4 alternatives generated with this tool have been proposed at the link above; more might be added. Eric Forwarded Message Subject: [matplotlib-devel] RFC: candidates for a new default colormap Date: Tue, 2 Jun 2015 18:46:21 -0700 From: Nathaniel Smith n...@pobox.com To: matplotlib-de...@lists.sourceforge.net matplotlib-de...@lists.sourceforge.net Hi all, As was hinted at in a previous thread, Stéfan van der Walt and I have been using some Fancy Color Technology to attempt to design a new colormap intended to become matplotlib's new default. (Down with jet!) Unfortunately, while our Fancy Color Technology includes a computational model of perceptual distance, it does not include a computational model of aesthetics. So this is where you come in. We've put up three reasonable candidates at: https://bids.github.io/colormap/ (along with some well-known colormaps for comparison), and we'd like your feedback. They are all optimal on all of the objective criteria we know how to measure. What we need judgements on is which one you like best, both aesthetically and as a way of visualizing data. (There are some sample plots to look at there, plus you can download them and play with them on your own data if you want.) We especially value input from anyone with anomalous color vision. There are some simulations there, but computational models are inherently limited here. (It's difficult to ask someone with colorblindness does this look to you, the same way this other picture looks to me?) -n -- Nathaniel J. Smith -- http://vorpus.org -- ___ Matplotlib-devel mailing list matplotlib-de...@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Unicode characters in PS output
Am 28.02.2013 um 14:31 schrieb Pierre Haessig: Hi Thomas, Le 27/02/2013 20:59, Thomas Sprinzing a écrit : To sum it up: use the old 7-bit equivalent for the degree sign, not any fancydancy UTF-8 character that is commonly not included in ye olde style postscript standard font embedded into your laser printer wy back then in the last millenium... Just out of curiosity, I looked at the list of ASCII printable characters (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters) and didn't find the degree sign. However, I found it in the so-called 8 bits extensions, which I believe is just the same as the Unicode U+00B0 confirmed by looking at http://www.adobe.com/type/browser/info/charsets.html Adobe western 2 has the same info. Alt-0179 or U+00B0 So, best is to use the degree sign. If you're not sure, what's present at rendering time, maybe try to force the generator to convert fonts to ps paths. But i donÄt know if matplotlib has tat optin at all... -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Unicode characters in PS output
I'd say it's got nearly nothing to do with matplotlib. The question is: will the font be included in the .ps and in the .pdf? If not, which is most likely, it's upon the renderer to decide what to do if the requested glyph in the requested font is present or not in the system. pdf is more likely to have the fonts / glyphs used also embeded in the pdf. One reason for them to be bigger than .ps. Ps, on the other hand, most of the times relys on the renderer to have the exact same font, referenced by name, pre-loaded in the system. Go figure. To sum it up: use the old 7-bit equivalent for the degree sign, not any fancydancy UTF-8 character that is commonly not included in ye olde style postscript standard font embedded into your laser printer wy back then in the last millenium... Am 26.02.2013 um 21:26 schrieb Gökhan Sever: On Tue, Feb 26, 2013 at 8:29 AM, Pierre Haessig pierre.haes...@crans.org wrote: Le 26/02/2013 14:38, Gökhan Sever a écrit : Could you test my outputs if they look fine on your side? http://atmos.uwyo.edu/~gsever/data/matplotlib/test.pdf http://atmos.uwyo.edu/~gsever/data/matplotlib/test.ps Good idea ! * your PDF file looks fine with Okular * your PS indeed has the problem you describe (again Okular) : - ° (degree sign) is fine - but ⁰ (zero superscript) is replaced by ? In case it may explain the difference : I'm using mpl 1.1.1rc2 from Debian testing and I have the following line in my matplotlibrc (is it relevant ???) font.sans-serif : DejaVu Sans, sans-serif Best, Pierre My matplotlib is a git clone of a couple weeks old. There is this line in the PS file (opening via vim) %%BeginResource: font KDYSTE+NewCenturySchlbk-Roman don't know where it gets this. #font.serif : DejaVu 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 : DejaVu Sans, Bitstream Vera Sans, Lucida Grande, Verdana, Geneva, Lucid, Arial, Helvetica, Avant Garde, sans-serif PS uses that even I choose to use fot.sans-serif. Dont see any font specification in the PDF file. -- Gökhan -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] CMYK
For what it's worth: Take a look at www.littlecms.com, its' python bindings: https://launchpad.net/pylittlecms and http://www.cazabon.com/pyCMS/ which seemingly has been built into PIL. I don't see the big deal in putting properly tagged RGB files into any publication, and then have the RIP decide what to do with this. Most of the RIPS will treat untagged RGB as sRGB. Unless you're a weird colour scientist, and know what you're doing, you may just end up doing fine. For the publications: ICC Profiles are NOT os dependent. And as a matter of fact, Adobe distributed profiles normally are pretty outdated, to the detriment of all involved in the printing process. IsoCoatedv2 has evolved as a standard-catch-all cmyk color space, IN EUROPE. The States: not so much. They use SWOP or whatever the Brickworks (Adobe) seem to default. If the scientific publishers do not accept pdf, but force you to submit word, you shall be fine with RGB, since word only speaks someuntaggedRGB If they insist in CMYK, ask them for the proper profile. Otherwise, you have the same no-control just cast me colours in any direction approach as by using untagged RGB colors. For your conversions, you may just need: http://www.graphicsmagick.org/ Unfortunately, gm does it the chaotic way, which might suffice to get your job done the quick way, yet unpredictable: convert -colorspace CMYK infile outfile hth Thomas Am 31.01.2013 um 18:08 schrieb Dieter: Thanks everybody for the input. As I see the answer is no, but it could be implemented. I did an extensive search, but I even struggle to find a good and practical solution how to convert a VECTORPLOT RGB to CMYK on a linux system. (One way I often found would be the Adobe suits, which I do not have.) I gave mpl_ps_cmyk a go, but execution failed, and the page looks dated. Furthermore, Adobes seems to provide ICCs only for Windows and Mac, but not for Linux. ImageMagick rasterizes the figure, the same with GIMP. I agree that this should be done on the publisher's side, but as a matter of fact it is the requirement of some journals. Is there really no practical way to do this? How do others convert RGB plots to CMYK? (Importing my data into Matlab and plotting them there cannot be the only possibility!) Thanks everybody again, much appreciated! Dieter -- View this message in context: http://matplotlib.1069221.n5.nabble.com/CMYK-tp40352p40379.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] CMYK
Am 30.01.2013 um 19:38 schrieb Eric Firing: My somewhat vague recollection is that CMYK is fundamentally output-device dependent, As is RGB by the way. Define Red: Fire-Engine-Red? Red-as-your-spouses-lips-red? After a glass-of-red-wine-lips-red? Just in RGB, world and dog settled for the pretty meagre sRGB standard for TV-like display devices (a.k.a. computer screens) Digital cameras do work better / cover more colours, therefore they should better use AdobeRGB. Alas, mostly it's a layer 8 problem, and there are no profiles or sRGB attached. You want to go independent: use Lab or Luv or Lch colour spaces. cheers Thomas -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] mplot3d interactive shading
Hi folks!
maybe you can point me in the right direction:
I have a list of colour measurements in Lab-Space(stored in an h5 table). Now,
3d-scatterplotting them was easy, also, assigning the corresponding rgb colour
value to the spots is relatively easy.
For the plot i use:
p=ax.scatter3D(table.cols.Lab_a[:],table.cols.Lab_b[:],table.cols.Lab_L[:],c=cols)
Now, the annoying part: when i move around the figure with the mouse, the
points in the background get dimmed or shaded down to less saturation. Now in
my case, i want to turn this behaviour off, since i want the points to be the
colour they represent, all the time.
How do i do this?
thanks for your help
Thomas
## values in table
from colormath.color_objects import LabColor
cols=[]
for row in table[:]:
cols.append(LabColor(lab_l=row['Lab_L'],lab_a=row['Lab_a'],lab_b=row['Lab_b']).convert_to('rgb').get_rgb_hex())
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.set_xlabel('a')
ax.set_ylabel('b')
ax.set_zlabel('L')
ax.set_xlim(-100,100)
ax.set_ylim(-100,100)
ax.set_zlim(0,100)
fig.show()
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Re: [Matplotlib-users] mplot3d interactive shading
done! https://github.com/matplotlib/matplotlib/issues/1692 cheers Thomas Am 21.01.2013 um 18:04 schrieb Benjamin Root: Hi folks! maybe you can point me in the right direction: I have a list of colour measurements in Lab-Space(stored in an h5 table). Now, 3d-scatterplotting them was easy, also, assigning the corresponding rgb colour value to the spots is relatively easy. For the plot i use: p=ax.scatter3D(table.cols.Lab_a[:],table.cols.Lab_b[:],table.cols.Lab_L[:],c=cols) Now, the annoying part: when i move around the figure with the mouse, the points in the background get dimmed or shaded down to less saturation. Now in my case, i want to turn this behaviour off, since i want the points to be the colour they represent, all the time. How do i do this? thanks for your help Thomas Unfortunately, there is no setting to turn this feature off. However, I don't see why it couldn't be done. It would be great if you could file a feature request on our github page. Cheers! Ben Root -- Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 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_122412 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
