The above exchange was off-list, we're back on now. I think that would be what
Tom is looking for, but it doesnt work:
In [1]: plot([1,2])
Out[1]: [<matplotlib.lines.Line2D instance at 0x710cb0>]
In [2]: savefig('dsd.png', facecolor='None', edgecolor='None')
路路路
On Friday 28 September 2007 07:36:23 am John Hunter wrote:
On 9/27/07, Darren Dale <dd55@...163...> wrote:
> Hi Eric, John,
>
> Have either of you been following this thread?I am now
As Eric suggests, None is overloaded vis-a-vis color handling, because
for mpl properties it generally means do the default as defined by rc.
For colors people often want to use None for "no color" which is why
we added support for the string "None". Does this work in your use
case Tom?
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
/home/darren/<ipython console> in <module>()
/usr/lib64/python2.5/site-packages/matplotlib/pyplot.py in savefig(*args,
**kwargs)
272 def savefig(*args, **kwargs):
273 fig = gcf()
--> 274 return fig.savefig(*args, **kwargs)
275 if Figure.savefig.__doc__ is not None:
276 savefig.__doc__ = dedent(Figure.savefig.__doc__)
/usr/lib64/python2.5/site-packages/matplotlib/figure.py in savefig(self,
*args, **kwargs)
768 kwargs[key] = rcParams['savefig.%s'%key]
769
--> 770 self.canvas.print_figure(*args, **kwargs)
771
772 def colorbar(self, mappable, cax=None, **kw):
/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_qt4agg.py in
print_figure(self, *args, **kwargs)
153 self.update(l, self.renderer.height-t, w, h)
154
155 def print_figure(self, *args, **kwargs):
--> 156 FigureCanvasAgg.print_figure(self, *args, **kwargs)
157 self.draw()
/usr/lib64/python2.5/site-packages/matplotlib/backend_bases.py in
print_figure(self, filename, dpi, facecolor, edgecolor, orientation, format,
**kwargs)
1194 edgecolor=edgecolor,
1195 orientation=orientation,
-> 1196 **kwargs)
1197 finally:
1198 self.figure.dpi.set(origDPI)
/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_agg.py in
print_png(self, filename, *args, **kwargs)
415
416 def print_png(self, filename, *args, **kwargs):
--> 417 self.draw()
418 self.get_renderer()._renderer.write_png(str(filename))
419
/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_qt4agg.py in
draw(self)
140 if DEBUG: print "FigureCanvasQtAgg.draw", self
141 self.replot = True
--> 142 FigureCanvasAgg.draw(self)
143 self.update()
144
/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_agg.py in
draw(self)
377
378 self.renderer = self.get_renderer()
--> 379 self.figure.draw(self.renderer)
380
381 def get_renderer(self):
/usr/lib64/python2.5/site-packages/matplotlib/figure.py in draw(self,
renderer)
586 self.transFigure.freeze() # eval the lazy objects
587
--> 588 if self.frameon: self.figurePatch.draw(renderer)
589
590 for p in self.patches: p.draw(renderer)
/usr/lib64/python2.5/site-packages/matplotlib/patches.py in draw(self,
renderer)
198 #renderer.open_group('patch')
199 gc = renderer.new_gc()
--> 200 gc.set_foreground(self._edgecolor)
201 gc.set_linewidth(self._linewidth)
202 gc.set_alpha(self._alpha)
/usr/lib64/python2.5/site-packages/matplotlib/backend_bases.py in
set_foreground(self, fg, isRGB)
617 self._rgb = fg
618 else:
--> 619 self._rgb = colors.colorConverter.to_rgb(fg)
620
621 def set_graylevel(self, frac):
/usr/lib64/python2.5/site-packages/matplotlib/colors.py in to_rgb(self, arg)
277
278 except (KeyError, ValueError, TypeError), exc:
--> 279 raise ValueError('to_rgb: Invalid rgb arg "%s"\n%s' %
(str(arg), exc))
280 # Error messages could be improved by handling TypeError
281 # separately; but this should be rare and not too hard
ValueError: to_rgb: Invalid rgb arg "None"
invalid literal for float(): None