Re: [Matplotlib-users] removing paths inside polygon

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

See https://github.com/matplotlib/matplotlib/pull/1846

On 03/22/2013 11:17 AM, Michael Droettboom wrote:
> 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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>
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