Re: [Matplotlib-users] RuntimeError after clearing and plotting for many times

[Yongtao C. <cui...@gm...>]

I don't know why those spaces always don't show up on the mailing list
webpage. They looked fine on my gmail page.

The 'test' function only has one 'for' loop. The four lines below the
'for' line are all in the loop.



On Dec 4, 2007 8:52 PM, Yongtao Cui <cui...@gm...> wrote:
> >>> import pylab
> >>> def test(n):
> >>>     for i in range(n):
> >>>          f=pylab.figure(1)
> >>>          f.clf()
> >>>          a=f.add_axes([0.2, 0.2, 0.6, 0.6])
> >>>          a.plot([1,2,3,4,5], 'ro')
> >>>
>
> I tracked down the svn tree. The above script works ok in revision
> 3737 and before, but crashes from revision 3738 and after.
>
> Yongtao
>
>
> On Dec 2, 2007 4:15 PM, Yongtao Cui <cui...@gm...> wrote:
> > Below is the minimum code with the right indent
> >
> > import pylab
> > def test(n):
> >     for i in range(n):
> >          f=pylab.figure(1)
> >          f.clf()
> >          a=f.add_axes([0.2, 0.2, 0.6, 0.6])
> >          a.plot([1,2,3,4,5], 'ro')
> >
> >
> > On Dec 2, 2007 4:07 PM, Yongtao Cui <cui...@gm...> wrote:
> > > Hi,
> > >
> > > I got the following error when clearing and plotting on the same
> > > figure for many times. I found the following minimum code to reproduce
> > > this error. I am using matplotlib-0.91.1 and wxpython2.8 on windows
> > > xp. In the matplotlibrc file, I changed the backend to WXAgg and
> > > interactive to True.
> > >
> > > import pylab
> > > def test(n):
> > >    for i in range(n):
> > >        f=pylab.figure(1)
> > >        f.clf()
> > >        a=f.add_axes([0.2, 0.2, 0.6, 0.6])
> > >        a.plot([1,2,3,4,5], 'ro')
> > >
> > >
> > > The error only happens for a large n. For example, test(10) works
> > > fine, but test(50) will cause the error. Also runing test(10) for a
> > > few times will also cause the error.
> > >
> > > Could anyone give me some help?
> > >
> > > Thanks.
> > >
> > > The following is the error message:
> > >
> > > Traceback (most recent call last):
> > >  File "<input>", line 1, in <module>
> > >  File "<input>", line 3, in test
> > >  File "C:\Python25\Lib\site-packages\matplotlib\pyplot.py", line 191, in figure
> > >  File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_wx.py",
> > > line 1227, in draw_if_interactive
> > >  File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_wxagg.py",
> > > line 61, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_agg.py",
> > > line 380, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\figure.py", line 612, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\axes.py", line 1344, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\axis.py", line 596, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\axis.py", line 170, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\text.py", line 775, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\text.py", line 317, in draw
> > >  File "C:\Python25\Lib\site-packages\matplotlib\text.py", line 195,
> > > in _get_layout
> > >  File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_agg.py",
> > > line 234, in get_text_width_height_descent
> > >  File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_agg.py",
> > > line 301, in _get_agg_font
> > > RuntimeError: Could not open facefile
> > > C:\Python25\lib\site-packages\matplotlib\mpl-data\fonts\ttf\Vera.ttf;
> > > Cannot_Open_Resource
> > >
> >
>