Re: [matplotlib-devel] plot([], [], drawstyle = 'steps') fails

[Michael D. <md...@st...>]

This is now fixed in SVN.  Thanks for the report.

Mike

Gregor Thalhammer wrote:
> Hi all,
>
> sorry, only reporting, no bugfix. I just discovered that an empty plot 
> with drawstyle 'steps', 'steps-pre', 'steps-mid' and 'steps-post' fails. 
> I am using matplotlib 0.98.5.2.
>
> Example
>
> plot([], [], drawstyle = 'steps')
>
> ...
> C:\Python25\lib\site-packages\matplotlib\lines.pyc in 
> _draw_steps_pre(self, renderer, gc, path, trans)
>     784     def _draw_steps_pre(self, renderer, gc, path, trans):
>     785         vertices = self._xy
> --> 786         steps = ma.zeros((2*len(vertices)-1, 2), np.float_)
>     787
>     788         steps[0::2, 0], steps[1::2, 0] = vertices[:, 0], 
> vertices[:-1, 0
> ]
> ...
>
> ValueError: negative dimensions are not allowed
>
> Gregor
>
>
>
>
>
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-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA