On Tue, May 1, 2012 at 3:04 PM, Elliot Saba <staticfl...@gmail.com> wrote:
> Hey guys, I'm trying to use tight_layout() to fix up some subplot
> grossness, but whenever I call it, I get:
>
> Traceback (most recent call last):
> File "test.py", line 16, in <module>
> plt.tight_layout()
> File
> "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/pyplot.py",
> line 1056, in tight_layout
> fig.tight_layout(pad=pad, h_pad=h_pad, w_pad=w_pad)
> File
> "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/figure.py",
> line 1415, in tight_layout
> pad=pad, h_pad=h_pad, w_pad=w_pad)
> File
> "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/tight_layout.py",
> line 117, in auto_adjust_subplotpars
> tight_bbox_raw = union([ax.get_tightbbox(renderer) for ax in subplots])
> File
> "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/axes.py",
> line 8396, in get_tightbbox
> bb.append(self.title.get_window_extent(renderer))
> File
> "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/text.py",
> line 743, in get_window_extent
> bbox, info = self._get_layout(self._renderer)
> File
> "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/text.py",
> line 296, in _get_layout
> ismath=False)
> File
> "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py",
> line 164, in get_text_width_height_descent
> width, height, descent =
> self.gc.get_text_width_height_descent(unicode(s), family, size, weight,
> style)
> RuntimeError: CGContextRef is NULL
>
> I've googled around, but no answers have been found. Is this a known
> issue, and if it's not, how can I go about fixing it?
> Thanks,
> -E
>
>
When I run the macosx backend (which appears to be what you're using), I
get the following output:
tight_layout : falling back to Agg renderer
and the figure appears to be rendered with TkAgg . So it appears that it's
a known issue on the macosx backend. And, apparently, the suggested
work-around is to use an Agg backend.
-Tony
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