Re: [Matplotlib-users] Plot only inside a disc

[John H. <jd...@gm...>]

On Fri, Jan 30, 2009 at 8:54 AM,  <And...@gt...> wrote:

> This is a very timely question for me.  I'm needing to do something very similar, but I need to overlay a semi-transparent rectangle with a hole cut out of it.  So, I'm making a rectangular patch, making a circular patch, setting the circular patch as the clip region for the rectangular patch, and then adding the clipped patch to the plot.  However, I seem to be having trouble with the coordinate system, as there is no clipping on the rectangle.
>
> My test code looks like this:

> r.set_clip_path(cutout)
> ax.add_patch(r)
> plt.show()


The problem is that the "add_patch" command is setting the clippath to
the axes bounding box.  I just committed a patch on the branch and
trunk which only sets the clippath to the default if it is not already
set.  If you don't have access to svn, just make the call to
r.set_clip_path *after* you call ax.add_patch.

JDH