Hi,
is there a existing patch for this problem or do we have to use/modify
iter_segments for the moment?
thanks
2011/1/15 Lionel Roubeyrie <lionel.roubey...@gmail.com>:
> The problem appends on some paths/polygons, not all. Have a look at
> the joined pictures. The to_polygons method normally take care about
> polygons holes, but here some vertices are not converted, resulting in
> wrong geometries.
> #############
> import numpy as np
> import pylab as plb
> a=np.recfromtxt('rpatch3.grid', delimiter='\t',names=True)
> lev=np.linspace(a.ux.min(), a.ux.max(), 10)
> cs=plb.tricontourf(a.lon, a.lat, a.ux, lev)
> path=cs.collections[5].get_paths()[0] #210 vertices
> path.to_polygons() #16 vertices :(
> #############
> Cheers
>
> 2011/1/14 Michael Droettboom <md...@stsci.edu>:
>> It's not obvious to me that this is wrong. The path has a MOVETO
>> command (1) in the middle, and thus should require the creation of two
>> polygons. Can you provide some code or pictures that demonstrate the
>> problem?
>>
>> Mike
>>
>> On 01/13/2011 05:54 PM, Lionel Roubeyrie wrote:
>>> Hi all,
>>> Using the last 1.0.1 matplotlib version,sometimes exporting paths to
>>> polygons gives wrong results like here (paths come from a
>>> tricontourset) :
>>> In [94]: path
>>> Out[94]:
>>> Path([[ 172.0079229 -43.79390934]
>>> [ 171.97660793 -43.785 ]
>>> [ 171.96206864 -43.78273625]
>>> [ 171.959 -43.78114859]
>>> ...
>>> [ 171.593 -44.00678244]
>>> [ 171.64906502 -44.01 ]
>>> [ 171.654 -44.01077106]
>>> [ 171.7068607 -44.0160044 ]], [1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
>>> 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
>>> 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 2 2 2 2 2 2 2 2 2
>>> 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
>>> 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
>>> 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
>>> 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2])
>>> In [95]: path.vertices.shape
>>> Out[95]: (210, 2)
>>>
>>> but to_polygons gives another result :
>>> In [98]: path.to_polygons()
>>> Out[98]:
>>> [array([[ 172.0079229 , -43.79390934],
>>> [ 171.86039224, -43.65 ],
>>> [ 172.081 , -43.54450289],
>>> [ 172.386 , -43.57010293],
>>> [ 172.60631978, -43.67753099],
>>> [ 172.59231502, -43.71219961],
>>> [ 172.325 , -43.78095532],
>>> [ 172.02 , -43.79497729]]),
>>> array([[ 171.715 , -44.0160044 ],
>>> [ 173.02676111, -43.92 ],
>>> [ 172.935 , -43.53340591],
>>> [ 171.40281884, -43.70029758],
>>> [ 171.37760645, -43.94389688],
>>> [ 171.54044973, -44.0037666 ],
>>> [ 171.7068607 , -44.0160044 ],
>>> [ 171.7068607 , -44.0160044 ]])]
>>>
>>> Cheers
>>>
>>>
>>
>>
>> --
>> Michael Droettboom
>> Science Software Branch
>> Space Telescope Science Institute
>> Baltimore, Maryland, USA
>>
>>
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>
>
>
> --
> Lionel Roubeyrie
> lionel.roubey...@gmail.com
> http://youarealegend.blogspot.com
>
--
Lionel Roubeyrie
lionel.roubey...@gmail.com
http://youarealegend.blogspot.com
------------------------------------------------------------------------------
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