This is not a bug. The exception is raised simply because "textartist.figure" is None (and it is None because you never set it). "textartist" you created is not properly set up (no figure, no axes, no transform). You may do
textartist = Text(0.5, 0.5, "Foo") textartist.set_figure(fig) fig.draw_artist(textartist) fig.canvas.blit(fig.bbox) But, this is not the recommended way of doing things. draw_artist is mainly for doing animation. http://matplotlib.sourceforge.net/examples/animation/index.html Regards, -JJ On Mon, Feb 8, 2010 at 4:24 PM, Ben Axelrod <baxel...@coroware.com> wrote: > I am getting a fault when I try to use Figure.draw_artist() with a > matplotlib.text.Text object. Since matplotlib.text.Text inherits from > matplotlib.artist.Artist, which is what draw_artist() takes, this should > probably work. > > Tested with latest SVN code on Linux. > > Here is the traceback: > > Traceback (most recent call last): > File "test.py", line 10, in <module> > fig.draw_artist(textartist) > File "/usr/local/lib/python2.6/site-packages/matplotlib/figure.py", line > 816, in draw_artist > a.draw(self._cachedRenderer) > File "/usr/local/lib/python2.6/site-packages/matplotlib/artist.py", line 55, > in draw_wrapper > draw(artist, renderer, *kl) > File "/usr/local/lib/python2.6/site-packages/matplotlib/text.py", line 549, > in draw > bbox, info = self._get_layout(renderer) > File "/usr/local/lib/python2.6/site-packages/matplotlib/text.py", line 267, > in _get_layout > key = self.get_prop_tup() > File "/usr/local/lib/python2.6/site-packages/matplotlib/text.py", line 716, > in get_prop_tup > self.figure.dpi, id(self._renderer), > AttributeError: 'NoneType' object has no attribute 'dpi' > > And here is some simple code to trigger the bug: > > #!/usr/bin/env python > # display bug in figure.draw_artist(matplotlib.text) > import matplotlib.pyplot as plt > from matplotlib.text import Text > > fig = plt.figure() > plt.draw() > > textartist = Text(0.5, 0.5, "Foo") > fig.draw_artist(textartist) > > plt.show() > #end code > > Note that I still get the bug even when i specify figsize and dpi on the > figure like so: > fig = plt.figure(figsize=(2,2), dpi=300) > > -Ben > ------------------------------------------------------------------------------ > The Planet: dedicated and managed hosting, cloud storage, colocation > Stay online with enterprise data centers and the best network in the business > Choose flexible plans and management services without long-term contracts > Personal 24x7 support from experience hosting pros just a phone call away. > http://p.sf.net/sfu/theplanet-com > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
