Hi Tony,
thanks for your reply! I am not using the pdf backend, but the
GTKAgg backend. Is it working with this backend in the development
version?Cheers Andi
Hi Andi,
Unfortunately, I can’t run the GTKAgg backend, but I checked your code snippet on the backends I have on my system. It seems this behavior is really inconsistent:
Works:
- agg
- qt4agg
- tkagg
Doesn’t work:
- macosx
To be honest, I don’t understand the magical workings of the backends very well. I’ve copied the developer list since the consistency of backends seems like a relevant issue.
-Tony
P.S. Andi: Be sure to “reply all” since the mailing list doesn’t automatically do this for some reason.
···
On Wed, Jan 25, 2012 at 7:14 AM, andi <andisspam@…564…> wrote:
On 25/01/12 00:26, Tony Yu wrote:
On Tue, Jan 24, 2012 at 12:53 PM, andi <andisspam@…564…> > > wrote:
Hi all,
I have some old custom code for generating videos from
matplotlib (not
using the animation module). It used to work, but is now
failing.
Here is what I am doing: ------------------- import matplotlib.pyplot as plt import numpy as np fig = plt.figure() ax = fig.add_subplot(111) im = ax.imshow(np.zeros((100, 100))) fig.canvas.draw() ax.draw_artist(im) ------------------ ... and draw_artist from axes.py then gives me an
AssertionError because
no renderer is found (assert self._cachedRenderer is not
None).
Right now I am using matplotlib 1.0.1 and I think that the
above used to
work with older versions in matplotlib. See e.g. [http://www.mail-archive.com/matplotlib-users@lists.sourceforge.net/msg06598.html](http://www.mail-archive.com/matplotlib-users@...1052...rceforge.net/msg06598.html) Any ideas? Cheers Andi
Hi Andi, I'm running a development version of matplotlib, and your code
runs without issue. That doesn’t really solve your issue, but
it means that it’s not due to deprecation.On a hunch, I tried running the code with >>> import matplotlib >>> matplotlib.use('pdf') at the top of the file, and I got the same error. Not really
sure why, though. Do you happen to have the pdf backend set as
the default?-Tony