Re: [Matplotlib-users] removing paths inside polygon

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

It's puzzler.  I'm looking at it now.

Mike

On 03/22/2013 06:33 AM, Andrew Dawson wrote:
> Thanks, the clipping is working now. But as you say the weird line 
> width issue still remains for Agg (and png, perhaps that uses Agg, I 
> don't know...). PDF output looks correct.
>
>
> On 20 March 2013 05:48, Jae-Joon Lee <lee...@gm... 
> <mailto:lee...@gm...>> wrote:
>
>
>     On Wed, Mar 13, 2013 at 2:17 AM, Andrew Dawson
>     <da...@at... <mailto:da...@at...>> wrote:
>
>         You should see that the circle is no longer circular, and also
>         there are weird line width issues. What I want it basically
>         exactly like the attached without_clipping.png but with paths
>         inside the circle removed.
>
>
>     The reason that circle is no more circle is that simply inverting
>     the vertices does not always results in a correctly inverted path.
>     Instead of following line.
>
>     interior.vertices = interior.vertices[::-1]
>
>     You should use something like below.
>
>     interior = mpath.Path(np.concatenate([interior.vertices[-2::-1],
>     interior.vertices[-1:]]),
>     interior.codes)
>
>     It would be good if we have a method to invert a path.
>
>     This will give you a circle. But the weird line width issue
>     remains. This seems to be an Agg issue, and the line width seems
>     to depend on the dpi.
>     I guess @mdboom nay have some insight on this.
>
>     Regards,
>
>     -JJ
>
>
>
>
> -- 
> Dr Andrew Dawson
> Atmospheric, Oceanic & Planetary Physics
> Clarendon Laboratory
> Parks Road
> Oxford OX1 3PU, UK
> Tel: +44 (0)1865 282438
> Email: da...@at... <mailto:da...@at...>
> Web Site: http://www2.physics.ox.ac.uk/contacts/people/dawson
>
>
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