Does this pull request:
https://github.com/matplotlib/matplotlib/pull/1697
fix your issue? I have no way of knowing without a test case...
Mike
On 01/22/2013 08:33 AM, Massimiliano Costacurta wrote:
> Hello everyone,
>
> in my program I'm encountering an error when calling the function
> axes.set_xticks (Matplotlib 1.2.0 on python 2.7-64 bit). It is really
> difficult for me to build a test case, because my program is really
> complex. Here is the error traceback:
>
> File "C:\Python27\Lib\site-packages\matplotlib\axes.py", line 2596, in
> set_xticks
> return self.xaxis.set_ticks(ticks, minor=minor)
> File "C:\Python27\Lib\site-packages\matplotlib\axis.py", line 1489, in
> set_ticks
> self.set_view_interval(min(ticks), max(ticks))
> File "C:\Python27\Lib\site-packages\matplotlib\axis.py", line 1771, in
> set_view_interval
> max(vmin, vmax, Vmax))
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 932, in _set_intervalx
> self.invalidate()
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 131, in invalidate
> return self._invalidate_internal(value, invalidating_node=self)
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 155, in _invalidate_internal
> invalidating_node=self)
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 155, in _invalidate_internal
> invalidating_node=self)
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 155, in _invalidate_internal
> invalidating_node=self)
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 2141, in _invalidate_internal
> invalidating_node=invalidating_node)
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 155, in _invalidate_internal
> invalidating_node=self)
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 2141, in _invalidate_internal
> invalidating_node=invalidating_node)
> File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line
> 153, in _invalidate_internal
> for parent in self._parents.itervalues():
> File "C:\Python27\Lib\weakref.py", line 147, in itervalues
> for wr in self.data.itervalues():
> RuntimeError: dictionary changed size during iteration
>
> I googled and found that this is a well known bug due to the use of
> self.data.itervalues() in the for loop (i think the correct syntax
> should be for wr in iter(self.data.items()). So I would like to point
> out the bug (if it is) to the matplotlib guys, how can I do it?
> In the meantime, how can I work around it without changing the source
> code?
> Thanks in advance!
>
>
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