Re: [Matplotlib-users] Saving as eps file shifts image?
I tried a simple array (see the code below) but cannot reproduce the problem you reported. import matplotlib.pyplot as plt import numpy as np arr = np.zeros((11, 11), dtype=d) arr[3,3]=1 im = plt.imshow(arr, interpolation=nearest, origin=lower) cont = plt.contour(arr, levels=[0.5]) plt.savefig(a.eps) Do you still see the shift with the above example code? And what version of matplotlib are you using? If possible, please post a complete script with the data (use a mock-up data if you want)? Regards, -JJ On Fri, Jul 23, 2010 at 12:16 AM, Jenna Lemonias je...@astro.columbia.edu wrote: No, I don't think the issue is a flip in the y-axis. I have a number of different examples of this, and many in which the contour is an ellipse so I can tell that the overall positioning is correct. It seems like something is going wrong only when I save the image... Thanks for the suggestion though! Jenna On Wed, Jul 21, 2010 at 3:40 PM, Jenna Lemonias je...@astro.columbia.eduwrote: I am trying to save a matplotlib 2d array image with an overlaid contour as an eps file. The contour appears to be shifted with respect to the image underneath in the eps file, particularly when I zoom in on the image. This shift is not noticeable in the plot within matplotlib. I am using imshow to display the image. The contour is created by plotting a list of closely-spaced x,y coordinates. The attached file matplotlib.png is a screenshot of the (zoomed-in) image as displayed by matplotlib. The attached file epsfile.png is a screenshot of the (zoomed-in) eps file. When I save this image as an eps file, it is actually 1 of 20 subplots and the shift is noticeable in each subplot. Thanks in advance for your help! Jenna Just as a wild guess, could this actually be an issue with how imshow uses the upper-left corner for (0,0)? I have seen 1-pixel shifts before, but this shift is a little dramatic and I am left wondering if what we are really seeing is that the contour that is desired should actually be fliped in the y-axis? Maybe you could try another example where you try to draw a contour further away from the center of the image and see if it still goes in the spot you expect it to be? Ben Root -- 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 -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Case stories of software including Matplotlib
Good morning Do you know where I could get examples of case stories about commercial or open source software that has been developed using the Matplotlib library? Many Thanks German -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] error AttributeError: 'module' object has no attribute 'use'
On Sun, Jul 25, 2010 at 3:55 PM, Satish Raghunath qgu...@my.utsa.edu wrote: AttributeError: 'module' object has no attribute 'use' It means that the module object (matplotlib) has no attribute named use. This kind of error is often encountered when wrong module is imported as matplotlib. Try import matplotlib print matplotlib.__file__ and see if the output correctly points the location where the matplotlib is installed. Regards, -JJ -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] matplotlib subplot2grid and projection
Hi Everyone, I am working on a weather conditions plot containing wind speed and direction. For that I use a custom polar projection. Now updated from Matplotlib 0.99 to 1.0 to use the subplot2grid feature. Now, after trying and searching for hours, I seem to be too dumb to combine my custom projection and subplot2grid. Before it did this way: ax1=plt.figure().add_subplot(111, projection='northpolar') But now I need sth like: ax2 = plt.subplot2grid((5,5), (2,3), colspan=2, rowspan=3) subplot2grid doesn't like a projection keyword. How can I implement my projection? Thanks! BB -- View this message in context: http://old.nabble.com/matplotlib-subplot2grid-and-projection-tp29268717p29268717.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] matplotlib.test() no errors, but $nosetest matplotlib.tests - errors and failure?
Of course, we'll prefer to see all of the tests pass... I'm surprised the two modes of running the tests gives different results. Are you sure they are running the same python? Does python `which nosetests` matplotlib.tests give you the same result as nosetests matplotlib.tests ? There must be some environmental difference between the two to cause the different results. Mike On 07/24/2010 05:09 PM, Adam wrote: Hello, I have just updated to v1.0.0 and am trying to run the test suite to make sure everything is ok. There seems to be two different suites and I am not sure which is correct/current: $python -c 'import matplotlib; matplotlib.test()' [...snipped output...] Ran 138 tests in 390.991s OK (KNOWNFAIL=2) $nosetests matplotlib.tests I get: [...snipped output] Ran 144 tests in 380.165s FAILED (errors=4, failures=1) Two of these errors are the known failures from above, and the other two are in matplotlib.tests.test_text.test_font_styles: ImageComparisonFailure: images not close: /home/adam/result_images/test_text/font_styles.png vs. /home/adam/result_images/test_text/expected-font_styles.png (RMS 23.833) ImageComparisonFailure: images not close: /home/adam/result_images/test_text/font_styles_svg.png vs. /home/adam/result_images/test_text/expected-font_styles_svg.png (RMS 12.961) The module that fails is: FAIL: matplotlib.tests.test_mlab.test_recarray_csv_roundtrip -- Traceback (most recent call last): File /usr/local/lib/python2.6/dist-packages/nose-0.11.4-py2.6.egg/nose/case.py, line 186, in runTest self.test(*self.arg) File /usr/local/lib/python2.6/dist-packages/matplotlib/tests/test_mlab.py, line 24, in test_recarray_csv_roundtrip assert np.allclose( expected['x'], actual['x'] ) AssertionError I am not sure of the importance level of these - but I wanted to ask to see if I should do anything or if they can safely be ignored. Thanks, Adam. -- 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 -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Case stories of software including Matplotlib
On Tue, Jul 27, 2010 at 6:01 AM, German Ocampo geroca...@gmail.com wrote: Good morning Do you know where I could get examples of case stories about commercial or open source software that has been developed using the Matplotlib library? Many Thanks German German, Interesting idea. Might be something nice to add to the project page, maybe? Ben Root -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Case stories of software including Matplotlib
Benjamin In my case, I'm in the process of selling Matplotlib at the interior of the company for that I work, and it will be a strong point if I could get references or recommendations from commercial software or institutions that had success using Matplotlib. In my point of view, the idea to add this to the webpage will be a very good first impression of the software. regards, German On Tue, Jul 27, 2010 at 3:05 PM, Benjamin Root ben.r...@ou.edu wrote: On Tue, Jul 27, 2010 at 6:01 AM, German Ocampo geroca...@gmail.com wrote: Good morning Do you know where I could get examples of case stories about commercial or open source software that has been developed using the Matplotlib library? Many Thanks German German, Interesting idea. Might be something nice to add to the project page, maybe? Ben Root -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] matplotlib.test() no errors, but $nosetest matplotlib.tests - errors and failure?
Hmm... surprisingly, I am actually able to reproduce this sort of behaviour here. I'll look into it further. Mike On 07/27/2010 09:49 AM, Michael Droettboom wrote: Of course, we'll prefer to see all of the tests pass... I'm surprised the two modes of running the tests gives different results. Are you sure they are running the same python? Does python `which nosetests` matplotlib.tests give you the same result as nosetests matplotlib.tests ? There must be some environmental difference between the two to cause the different results. Mike On 07/24/2010 05:09 PM, Adam wrote: Hello, I have just updated to v1.0.0 and am trying to run the test suite to make sure everything is ok. There seems to be two different suites and I am not sure which is correct/current: $python -c 'import matplotlib; matplotlib.test()' [...snipped output...] Ran 138 tests in 390.991s OK (KNOWNFAIL=2) $nosetests matplotlib.tests I get: [...snipped output] Ran 144 tests in 380.165s FAILED (errors=4, failures=1) Two of these errors are the known failures from above, and the other two are in matplotlib.tests.test_text.test_font_styles: ImageComparisonFailure: images not close: /home/adam/result_images/test_text/font_styles.png vs. /home/adam/result_images/test_text/expected-font_styles.png (RMS 23.833) ImageComparisonFailure: images not close: /home/adam/result_images/test_text/font_styles_svg.png vs. /home/adam/result_images/test_text/expected-font_styles_svg.png (RMS 12.961) The module that fails is: FAIL: matplotlib.tests.test_mlab.test_recarray_csv_roundtrip -- Traceback (most recent call last): File /usr/local/lib/python2.6/dist-packages/nose-0.11.4-py2.6.egg/nose/case.py, line 186, in runTest self.test(*self.arg) File /usr/local/lib/python2.6/dist-packages/matplotlib/tests/test_mlab.py, line 24, in test_recarray_csv_roundtrip assert np.allclose( expected['x'], actual['x'] ) AssertionError I am not sure of the importance level of these - but I wanted to ask to see if I should do anything or if they can safely be ignored. Thanks, Adam. -- 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 -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] matplotlib subplot2grid and projection
Thanks for reporting. This is now fixed in r8581(maint branch) and r8582(trunk). Meanwhile, you may define your own subplot2grid function and use it instead. from matplotlib.gridspec import GridSpec from matplotlib.pyplot import gcf, draw_if_interactive, delaxes def mysubplot2grid(shape, loc, rowspan=1, colspan=1, **kwargs): fig = gcf() s1, s2 = shape subplotspec = GridSpec(s1, s2).new_subplotspec(loc, rowspan=rowspan, colspan=colspan) a = fig.add_subplot(subplotspec, **kwargs) bbox = a.bbox byebye = [] for other in fig.axes: if other==a: continue if bbox.fully_overlaps(other.bbox): byebye.append(other) for ax in byebye: delaxes(ax) draw_if_interactive() return a You can use this function as ax = mysubplot2grid((3,3), (0,0), colspan=2, rowspan=2, projection=polar) Regards, -JJ On Tue, Jul 27, 2010 at 2:06 AM, bbarton bastian.bar...@gmx.de wrote: Hi Everyone, I am working on a weather conditions plot containing wind speed and direction. For that I use a custom polar projection. Now updated from Matplotlib 0.99 to 1.0 to use the subplot2grid feature. Now, after trying and searching for hours, I seem to be too dumb to combine my custom projection and subplot2grid. Before it did this way: ax1=plt.figure().add_subplot(111, projection='northpolar') But now I need sth like: ax2 = plt.subplot2grid((5,5), (2,3), colspan=2, rowspan=3) subplot2grid doesn't like a projection keyword. How can I implement my projection? Thanks! BB -- View this message in context: http://old.nabble.com/matplotlib-subplot2grid-and-projection-tp29268717p29268717.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] PolyCollection API
why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Case stories of software including Matplotlib
On 27/07/10 15:05, Benjamin Root wrote: On Tue, Jul 27, 2010 at 6:01 AM, German Ocampogeroca...@gmail.com wrote: Good morning Do you know where I could get examples of case stories about commercial or open source software that has been developed using the Matplotlib library? Many Thanks German German, Interesting idea. Might be something nice to add to the project page, maybe? I have no ready case story about it, but I developed and published a MPL-based open source software here: http://code.google.com/p/hooke which has been presented in a peer-reviewed academic publication on Bioinformatics ( http://bioinformatics.oxfordjournals.org/cgi/content/abstract/btp180?ijkey=B9QGeobopuepKnZkeytype=ref ) If you need information to build a case story, ask me -perhaps I can help you if it's not too much work. cheers, M. -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeates mat.yea...@gmail.com wrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Documentation error/bug?
2010/7/26 Benjamin Root ben.r...@ou.edu:
After some reading of sphinx documentation, it appears to be a bug with
sphinx (or actually, smartypants) because it should not be doing this sort
of interpretation within a docstring. Anyway, supposedly the workaround is
to put double backticks around the part that needs to be treated literally:
``'--'``. I tried this out and built the docs locally and it works... sort
of. The text that is surrounded by double backticks are getting a different
background color. This doesn't look great to me. Maybe someone else has a
thought?
How looks a backticked empty string like? If it is just nothing, it
could be used in between of the two hyphens, to separate them by
nothing. Still very hackish ... But it's just like LaTeX -{}-.
Friedrich
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Re: [Matplotlib-users] Fit a plane to a set of xyz points
2010/7/26 Mathew Yeates mat.yea...@gmail.com: Is there a simple function call for this? And finding the distance of a point to the plane? Hmm, when you are interested in the z distance alone, it should be a matrix equation: Z = X * m_x + Y * m_y + 1 * n Meaning you can invert it with Moore-Penrose pseudoinversion, i.e., numpy.lstsq()? When you have weights on Z, normalise first. Friedrich -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
On 07/27/2010 08:14 AM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? With 1.0: In [8]: verts Out[8]: [(0, 0), (0, 8), (8, 8), (8, 0)] In [9]: p = PolyCollection([verts]) Eric -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeatesmat.yea...@gmail.com wrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
On Jul 27, 2010, at 2:14 PM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? -Mathew I don't really use PolyCollection, but the docstring suggests you need to put your verts inside of a list: *verts* is a sequence of ( *verts0*, *verts1*, ...) where *verts_i* is a sequence of *xy* tuples of vertices, or an equivalent :mod:`numpy` array of shape (*nv*, 2). It's a bit confusing, but the first argument, verts, is actually a sequence, of a sequence, of vertices (the repetition is intentional). For example: square = [(0, 0), (0, 4), (4, 4), (4, 0)] triangle = [(0, 4), (0, 7), (4, 4)] verts = [square, triangle] In other words, the verts you created in your description describes a single polygon, where as verts should be a list of polygons. -Tony -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Case stories of software including Matplotlib
On Jul 27, 2010, at 1:31 PM, ms wrote: On 27/07/10 15:05, Benjamin Root wrote: On Tue, Jul 27, 2010 at 6:01 AM, German Ocampogeroca...@gmail.com wrote: Good morning Do you know where I could get examples of case stories about commercial or open source software that has been developed using the Matplotlib library? Many Thanks German German, Interesting idea. Might be something nice to add to the project page, maybe? I have no ready case story about it, but I developed and published a MPL-based open source software here: http://code.google.com/p/hooke which has been presented in a peer-reviewed academic publication on Bioinformatics ( http://bioinformatics.oxfordjournals.org/cgi/content/abstract/btp180?ijkey=B9QGeobopuepKnZkeytype=ref ) If you need information to build a case story, ask me -perhaps I can help you if it's not too much work. cheers, M. German, You might be interested in CellProfiler Analyst (http://www.cellprofiler.org/). Also, matplotlib is an optional dependency for FiPy (http://www.ctcms.nist.gov/fipy/). Best, -Tony-- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
I still get the error ValueError: arrays must have same number of dimensions at line 587 in collections.py This is on Windows. On Tue, Jul 27, 2010 at 11:42 AM, Eric Firing efir...@hawaii.edu wrote: On 07/27/2010 08:14 AM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? With 1.0: In [8]: verts Out[8]: [(0, 0), (0, 8), (8, 8), (8, 0)] In [9]: p = PolyCollection([verts]) Eric -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeatesmat.yea...@gmail.com wrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Axes3D depth problem
Hallo, I got a depth problem with Axes3D. I made a plot_surface and add 2 Circle object with add_patch and mpl_toolkits.mplot3d.art3d.patch_2d_to_3d. The problem is that the circles are always in front. I upload a picture here http://yfrog.com/nd3dproblemp . The gui is rotatable, so I can't just remove the second Circle (like I did for the screenshot). How to get right order to the object? greetz Frank -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
On 07/27/2010 08:55 AM, Mathew Yeates wrote: I still get the error ValueError: arrays must have same number of dimensions at line 587 in collections.py I think you are not actually doing what you think you are doing, and what was explained by Tony. Try the attached script. Eric This is on Windows. On Tue, Jul 27, 2010 at 11:42 AM, Eric Firingefir...@hawaii.edu wrote: On 07/27/2010 08:14 AM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? With 1.0: In [8]: verts Out[8]: [(0, 0), (0, 8), (8, 8), (8, 0)] In [9]: p = PolyCollection([verts]) Eric -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeatesmat.yea...@gmail.comwrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew from matplotlib.collections import PolyCollection poly0_verts = [(0, 0), (0, 8), (8, 8), (8, 0)] polys_verts = [poly0_verts] # only one poly in the collection p = PolyCollection(polys_verts) -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Axes3D depth problem
On Tue, Jul 27, 2010 at 2:25 PM, copyrig...@gmx.de wrote: Hallo, I got a depth problem with Axes3D. I made a plot_surface and add 2 Circle object with add_patch and mpl_toolkits.mplot3d.art3d.patch_2d_to_3d. The problem is that the circles are always in front. I upload a picture here http://yfrog.com/nd3dproblemp . The gui is rotatable, so I can't just remove the second Circle (like I did for the screenshot). How to get right order to the object? greetz Frank Frank, Could you please include a script that reproduces this? There have been some issues like this reported before, but it would only occur at certain viewing angles. Is this problem occurring regardless of what viewing angle you are looking at the plot? It would be useful to have an example that *always* looks bad for fixing purposes. Ben Root -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
I tried xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection([verts]) already but it doesn't work on line 581 of collections.py there is for xy in verts: but verts=[[(0, 0), (0, 8), (8, 8), (8, 0)]] i.e. a list with a single element. so the loop happens only once -Mathew On Tue, Jul 27, 2010 at 12:29 PM, Eric Firing efir...@hawaii.edu wrote: On 07/27/2010 08:55 AM, Mathew Yeates wrote: I still get the error ValueError: arrays must have same number of dimensions at line 587 in collections.py I think you are not actually doing what you think you are doing, and what was explained by Tony. Try the attached script. Eric This is on Windows. On Tue, Jul 27, 2010 at 11:42 AM, Eric Firingefir...@hawaii.edu wrote: On 07/27/2010 08:14 AM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? With 1.0: In [8]: verts Out[8]: [(0, 0), (0, 8), (8, 8), (8, 0)] In [9]: p = PolyCollection([verts]) Eric -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeatesmat.yea...@gmail.com wrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
On 07/27/2010 09:43 AM, Mathew Yeates wrote: I tried xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection([verts]) already but it doesn't work Yes, I saw you say that, but---did you actually try running the script I attached? Please run it from the command line (python pctest.py), and if it fails, send the traceback. Eric on line 581 of collections.py there is for xy in verts: but verts=[[(0, 0), (0, 8), (8, 8), (8, 0)]] i.e. a list with a single element. so the loop happens only once -Mathew On Tue, Jul 27, 2010 at 12:29 PM, Eric Firingefir...@hawaii.edu wrote: On 07/27/2010 08:55 AM, Mathew Yeates wrote: I still get the error ValueError: arrays must have same number of dimensions at line 587 in collections.py I think you are not actually doing what you think you are doing, and what was explained by Tony. Try the attached script. Eric This is on Windows. On Tue, Jul 27, 2010 at 11:42 AM, Eric Firingefir...@hawaii.eduwrote: On 07/27/2010 08:14 AM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? With 1.0: In [8]: verts Out[8]: [(0, 0), (0, 8), (8, 8), (8, 0)] In [9]: p = PolyCollection([verts]) Eric -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeatesmat.yea...@gmail.com wrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
On Tue, Jul 27, 2010 at 2:50 PM, Eric Firing efir...@hawaii.edu wrote:
On 07/27/2010 09:43 AM, Mathew Yeates wrote:
I tried
xs=[0,0,8,8]
ys=[0,8,8,0]
verts=zip(xs,ys)
poly = PolyCollection([verts])
already but it doesn't work
Yes, I saw you say that, but---did you actually try running the script I
attached?
Please run it from the command line (python pctest.py), and if it
fails, send the traceback.
The reason Eric suggests running it from the command line is because
if you are running a persistent python session with a current
figure/axes, the old, bad collection may still be residing in your
axes. Running from the command line will insure a clean environment.
To test whether this explanation is correct, run plt.close('all')
before rerunning your code. But do take Eric's suggestion to run from
the shell and post output.
--
The Palm PDK Hot Apps Program offers developers who use the
Plug-In Development Kit to bring their C/C++ apps to Palm for a share
of $1 Million in cash or HP Products. Visit us here for more details:
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Re: [Matplotlib-users] Axes3D depth problem
Hallo Ben Root, I put together some snippets #CODE import matplotlib.pyplot as plt from matplotlib.patches import Circle import mpl_toolkits.mplot3d.art3d as art3d from mpl_toolkits.mplot3d import Axes3D import numpy import matplotlib step = 0.04 maxval = 1.0 fig = plt.figure() ax = Axes3D(fig,aspect='equal') ri = 0.625 rj = 1.25 l = 5 ##CONE r = numpy.linspace(rj,rj,6) r[0]= numpy.zeros(r[0].shape) r[1] *= ri/rj r[5] *= ri/rj r[3]= numpy.zeros(r[3].shape) p = numpy.linspace(0,2*numpy.pi,50) R,P = numpy.meshgrid(r,p) X,Y = R*numpy.cos(P),R*numpy.sin(P) tmp=list() for i in range(50): tmp.append([0,0,l,l,l,0]) Z = numpy.array(tmp) ax.plot_surface(X, Z,Y, rstride=1, cstride=1, color=b) ##CIRCLES p=Circle((0,0),rj,color=red) ax.add_patch(p) art3d.patch_2d_to_3d(p, z=l, zdir=y) p=Circle((0,0),ri,color=red) ax.add_patch(p) art3d.patch_2d_to_3d(p, z=0, zdir=y) ax.set_ylim3d(-0.5, l+.5) ax.set_xlim3d(-l*0.5-0.5, l*0.5+0.5) ax.set_zlim3d(-l*0.5-0.5, l*0.5+0.5) plt.show() #CODE greetz Frank Am 27.07.2010 21:36, schrieb Benjamin Root: On Tue, Jul 27, 2010 at 2:25 PM, copyrig...@gmx.de mailto:copyrig...@gmx.de wrote: Hallo, I got a depth problem with Axes3D. I made a plot_surface and add 2 Circle object with add_patch and mpl_toolkits.mplot3d.art3d.patch_2d_to_3d. The problem is that the circles are always in front. I upload a picture here http://yfrog.com/nd3dproblemp . The gui is rotatable, so I can't just remove the second Circle (like I did for the screenshot). How to get right order to the object? greetz Frank Frank, Could you please include a script that reproduces this? There have been some issues like this reported before, but it would only occur at certain viewing angles. Is this problem occurring regardless of what viewing angle you are looking at the plot? It would be useful to have an example that *always* looks bad for fixing purposes. Ben Root -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Fit a plane to a set of xyz points
On Tue, Jul 27, 2010 at 1:37 PM, Friedrich Romstedt friedrichromst...@gmail.com wrote: 2010/7/26 Mathew Yeates mat.yea...@gmail.com: Is there a simple function call for this? And finding the distance of a point to the plane? Hmm, when you are interested in the z distance alone, it should be a matrix equation: Z = X * m_x + Y * m_y + 1 * n Meaning you can invert it with Moore-Penrose pseudoinversion, i.e., numpy.lstsq()? When you have weights on Z, normalise first. Friedrich Just one quick note on this: If you fit Z = aX + bY + c, you won't be able to resolve vertical planes. Likewise, if you fit x = aY + Bz + c or y = aX + bZ + c you won't be able to resolve horizontal planes. If you need to robustly fit a plane to a point cloud, you'll need to try all three formulations. See here for a quick example of what Friedrich mentioned using all three formulations and choosing the most robust result: http://code.google.com/p/python-geoprobe/source/browse/geoprobe/common.py#198 As far as finding the distance of a given point (x0, y0, z0) to the plane defined by 0 = ax + by + cz + d, the equation is just abs(a * x0 + b * y0 + c * z0 + d) / sqrt(a**2 + b**2 + c**2). See herehttp://mathworld.wolfram.com/Point-PlaneDistance.html for a more detailed explanation. -Joe -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
your code works fine. But I thought it wasnt working because when I do zs=[0,0.1,0.2,0.3] #pdb.set_trace() poly = PolyCollection([verts]) ax.add_collection3d(poly,zs=zs) I just get a flat plane. On Tue, Jul 27, 2010 at 12:50 PM, Eric Firing efir...@hawaii.edu wrote: On 07/27/2010 09:43 AM, Mathew Yeates wrote: I tried xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection([verts]) already but it doesn't work Yes, I saw you say that, but---did you actually try running the script I attached? Please run it from the command line (python pctest.py), and if it fails, send the traceback. Eric on line 581 of collections.py there is for xy in verts: but verts=[[(0, 0), (0, 8), (8, 8), (8, 0)]] i.e. a list with a single element. so the loop happens only once -Mathew On Tue, Jul 27, 2010 at 12:29 PM, Eric Firingefir...@hawaii.edu wrote: On 07/27/2010 08:55 AM, Mathew Yeates wrote: I still get the error ValueError: arrays must have same number of dimensions at line 587 in collections.py I think you are not actually doing what you think you are doing, and what was explained by Tony. Try the attached script. Eric This is on Windows. On Tue, Jul 27, 2010 at 11:42 AM, Eric Firingefir...@hawaii.edu wrote: On 07/27/2010 08:14 AM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? With 1.0: In [8]: verts Out[8]: [(0, 0), (0, 8), (8, 8), (8, 0)] In [9]: p = PolyCollection([verts]) Eric -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeatesmat.yea...@gmail.com wrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Axes3D depth problem
On Tue, Jul 27, 2010 at 3:10 PM, copyrig...@gmx.de wrote: Hallo Ben Root, I put together some snippets #CODE import matplotlib.pyplot as plt from matplotlib.patches import Circle import mpl_toolkits.mplot3d.art3d as art3d from mpl_toolkits.mplot3d import Axes3D import numpy import matplotlib step = 0.04 maxval = 1.0 fig = plt.figure() ax = Axes3D(fig,aspect='equal') ri = 0.625 rj = 1.25 l = 5 ##CONE r = numpy.linspace(rj,rj,6) r[0]= numpy.zeros(r[0].shape) r[1] *= ri/rj r[5] *= ri/rj r[3]= numpy.zeros(r[3].shape) p = numpy.linspace(0,2*numpy.pi,50) R,P = numpy.meshgrid(r,p) X,Y = R*numpy.cos(P),R*numpy.sin(P) tmp=list() for i in range(50): tmp.append([0,0,l,l,l,0]) Z = numpy.array(tmp) ax.plot_surface(X, Z,Y, rstride=1, cstride=1, color=b) ##CIRCLES p=Circle((0,0),rj,color=red) ax.add_patch(p) art3d.patch_2d_to_3d(p, z=l, zdir=y) p=Circle((0,0),ri,color=red) ax.add_patch(p) art3d.patch_2d_to_3d(p, z=0, zdir=y) ax.set_ylim3d(-0.5, l+.5) ax.set_xlim3d(-l*0.5-0.5, l*0.5+0.5) ax.set_zlim3d(-l*0.5-0.5, l*0.5+0.5) plt.show() #CODE greetz Frank Am 27.07.2010 21:36, schrieb Benjamin Root: On Tue, Jul 27, 2010 at 2:25 PM, copyrig...@gmx.de mailto:copyrig...@gmx.de wrote: Hallo, I got a depth problem with Axes3D. I made a plot_surface and add 2 Circle object with add_patch and mpl_toolkits.mplot3d.art3d.patch_2d_to_3d. The problem is that the circles are always in front. I upload a picture here http://yfrog.com/nd3dproblemp . The gui is rotatable, so I can't just remove the second Circle (like I did for the screenshot). How to get right order to the object? greetz Frank Thanks, At first glance, I am wondering if the problem is that the Circle objects are not properly getting a zsort value when converted to a 3d object. I will see if there is an inconsistency in behavior between different types of patches. Ben Root -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] PolyCollection API
My bad. Since I wanted to draw a plane, I thought I wanted to use a polygon. Instead, using plot_surface I get what I want. -Mathew On Tue, Jul 27, 2010 at 1:40 PM, Mathew Yeates mat.yea...@gmail.com wrote: your code works fine. But I thought it wasnt working because when I do zs=[0,0.1,0.2,0.3] #pdb.set_trace() poly = PolyCollection([verts]) ax.add_collection3d(poly,zs=zs) I just get a flat plane. On Tue, Jul 27, 2010 at 12:50 PM, Eric Firing efir...@hawaii.edu wrote: On 07/27/2010 09:43 AM, Mathew Yeates wrote: I tried xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection([verts]) already but it doesn't work Yes, I saw you say that, but---did you actually try running the script I attached? Please run it from the command line (python pctest.py), and if it fails, send the traceback. Eric on line 581 of collections.py there is for xy in verts: but verts=[[(0, 0), (0, 8), (8, 8), (8, 0)]] i.e. a list with a single element. so the loop happens only once -Mathew On Tue, Jul 27, 2010 at 12:29 PM, Eric Firingefir...@hawaii.edu wrote: On 07/27/2010 08:55 AM, Mathew Yeates wrote: I still get the error ValueError: arrays must have same number of dimensions at line 587 in collections.py I think you are not actually doing what you think you are doing, and what was explained by Tony. Try the attached script. Eric This is on Windows. On Tue, Jul 27, 2010 at 11:42 AM, Eric Firingefir...@hawaii.edu wrote: On 07/27/2010 08:14 AM, Mathew Yeates wrote: I installed matplotlib 1.0 and now I get a different error s=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) fails at line 587 in collections because xy = array([0, 0]) # xy.shape = (2,) and line 587 says xy = np.concatenate([xy, np.zeros((1,2))]) What do I do? With 1.0: In [8]: verts Out[8]: [(0, 0), (0, 8), (8, 8), (8, 0)] In [9]: p = PolyCollection([verts]) Eric -Mathew On Tue, Jul 27, 2010 at 9:51 AM, Mathew Yeatesmat.yea...@gmail.com wrote: why doesn't this work? xs=[0,0,8,8] ys=[0,8,8,0] verts=zip(xs,ys) poly = PolyCollection(verts) I tried poly = PolyCollection([verts]) but that doesn't work either -Mathew -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
