Two days ago I posted some questions about upgrading, and was pointed to the right resources by some readers who replied to me privately (thanks!). I am running Python 2.6 on an Ubuntu Linux 10.10 platform. The upgrade appeared to build successfully, but I still have problems.
Line graphs appear to be working all right, but images and contour graphs generate errors, and fail to draw. My procedure: I deleted every last old matplotlib-related file from my hard disk,from both my Python dist-packages directory and from my home directory. I got my build dependencies up to date, and installed using git as described here: http://matplotlib.sourceforge.net/faq/installing_faq.html#install-from-git The three-line simple_plot.py script suggested here... http://matplotlib.sourceforge.net/faq/installing_faq.html ...runs, displays a line graph, and outputs the following when run with the flag --verbose-helpful: 17:26:42 -> python simple_plot.py --verbose-helpful $HOME=/home/john CONFIGDIR=/home/john/.matplotlib matplotlib data path /usr/local/lib/python2.6/dist-packages/matplotlib/mpl-data loaded rc file /usr/local/lib/python2.6/dist-packages/matplotlib/mpl-data/matplotlibrc matplotlib version 1.2.x verbose.level helpful interactive is False platform is linux2 Using fontManager instance from /home/john/.matplotlib/fontList.cache backend GTKAgg version 2.21.0 findfont: Matching :family=sans-serif:style=normal:variant=normal:weight=normal:stretch=normal:size=medium to Bitstream Vera Sans (/usr/local/lib/python2.6/dist-packages/matplotlib/mpl-data/fonts/ttf/Vera.ttf) with score of 0.000000 Now, here's a very simple script of mine, which should draw a figure with a colored bulls-eye: from numpy import exp, fromfunction, hypot import matplotlib.pyplot as plt def func(x, y): return exp(-hypot(x-50,y-50) / 20) fig = plt.figure() ax = plt.subplot(111) arr = fromfunction(func, (101,101)) img = plt.imshow(arr) plt.show() Instead, it draws an empty figure, and returns a long and apparently-repeated traceback, which I hesitate to post in its entirety. Here's the last repeat. I believe that I got this eight times in a row: Traceback (most recent call last): File "/usr/local/lib/python2.6/dist-packages/matplotlib/backends/backend_gtk.py", line 418, in expose_event self._render_figure(self._pixmap, w, h) File "/usr/local/lib/python2.6/dist-packages/matplotlib/backends/backend_gtkagg.py", line 75, in _render_figure FigureCanvasAgg.draw(self) File "/usr/local/lib/python2.6/dist-packages/matplotlib/backends/backend_agg.py", line 400, in draw self.figure.draw(self.renderer) File "/usr/local/lib/python2.6/dist-packages/matplotlib/artist.py", line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File "/usr/local/lib/python2.6/dist-packages/matplotlib/figure.py", line 886, in draw func(*args) File "/usr/local/lib/python2.6/dist-packages/matplotlib/artist.py", line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File "/usr/local/lib/python2.6/dist-packages/matplotlib/axes.py", line 1983, in draw a.draw(renderer) File "/usr/local/lib/python2.6/dist-packages/matplotlib/artist.py", line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File "/usr/local/lib/python2.6/dist-packages/matplotlib/image.py", line 356, in draw im = self.make_image(renderer.get_image_magnification()) File "/usr/local/lib/python2.6/dist-packages/matplotlib/image.py", line 576, in make_image transformed_viewLim) File "/usr/local/lib/python2.6/dist-packages/matplotlib/image.py", line 202, in _get_unsampled_image x = self.to_rgba(self._A, bytes=True) File "/usr/local/lib/python2.6/dist-packages/matplotlib/cm.py", line 215, in to_rgba x = self.cmap(x, alpha=alpha, bytes=bytes) File "/usr/local/lib/python2.6/dist-packages/matplotlib/colors.py", line 521, in __call__ cbook._putmask(xa, xa==1.0, np.nextafter(xa.dtype.type(1), AttributeError: 'module' object has no attribute 'nextafter' Programs which invoke contour() instead of imshow() fail similarly. I downloaded the 1.1.0 animation examples (my whole reason for upgrading was to use the new animation methods), and only the line-graph examples work. As suggested (on a page I can't quite track down now), I captured a log of the build and install commands. The words "error" or "warning" do not show up in either of those logs -- and I did get several warnings when building 0.99 and 1.0.1, so I feel like things ought to be working better this time, not worse... Thanks for any hints! ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
