Re: [Matplotlib-users] Figure.draw_artist() bug with Text
I see. But why would I need to set the figure manually when I am drawing with a figure? Is it ever the case where you set one figure, but draw with another? For example: textartist.set_figure(fig1) fig2.draw_artist(textartist) Also, other atists don't fail in this manner if I don't use artist.set_figure(). -Ben -Original Message- From: Jae-Joon Lee [mailto:lee.j.j...@gmail.com] Sent: Monday, February 08, 2010 6:36 PM To: Ben Axelrod Cc: matplotlib-users@lists.sourceforge.net Subject: Re: [Matplotlib-users] Figure.draw_artist() bug with Text 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
Re: [Matplotlib-users] Figure.draw_artist() bug with Text
Figure.draw_artist is just a convenience function. def draw_artist(self, a): draw :class:`matplotlib.artist.Artist` instance *a* only -- this is available only after the figure is drawn assert self._cachedRenderer is not None a.draw(self._cachedRenderer) And, all the drawing is done by the artist itself. Also, other atists don't fail in this manner if I don't use artist.set_figure(). As far as I can see, it only means that you're lucky with other artists. The reason Text artists needs a reference to the figure is to access the dpi value, as the exception indicates. All artists are meant to be added to an axes (or at least axes, figure, etc. attributes set appropriately) to work correctly. Regards, -JJ -- 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
[Matplotlib-users] Figure.draw_artist() bug with Text
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
Re: [Matplotlib-users] Figure.draw_artist() bug with Text
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
