[Matplotlib-users] Basemap: GEOS_ERRORs

2009-07-02 Thread Stephane Raynaud 
Hi (Jeff),


I recently performed updates to matplotlib and basemap.
From this time, I have a random and reccurent error when I create a
Basemap instance.
Here is one example :

 from mpl_toolkits.basemap import Basemap
 Basemap(**{'lon_0': -4.5250263598141309, 'urcrnrlat': 49.140154231678416, 
 'projection': 'cyl', 'llcrnrlon': -7.268048710144, 'lat_ts': 
 47.468781818043126, 'urcrnrlon': -1.7500559147572474, 'area_thresh': 0.1, 
 'llcrnrlat': 45.797409404407844, 'resolution': 'i', 'lat_0': 
 47.468781818043126})

GEOS_ERROR: TopologyException: found non-noded intersection between
8.67583 4.66292, 8.70206 4.66997 and 8.71039 4.67664, 8.67708 4.64997
8.70205 4.66997

It depends on the area and the resolution (polygons).

I have version '0.99.3' of basemap.

Any idea?
-- 
Stephane Raynaud

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Re: [Matplotlib-users] Basemap: GEOS_ERRORs

2009-07-02 Thread Jeff Whitaker 
Stephane Raynaud wrote:
 Hi (Jeff),


 I recently performed updates to matplotlib and basemap.
 From this time, I have a random and reccurent error when I create a
 Basemap instance.
 Here is one example :

   
 from mpl_toolkits.basemap import Basemap
 Basemap(**{'lon_0': -4.5250263598141309, 'urcrnrlat': 49.140154231678416, 
 'projection': 'cyl', 'llcrnrlon': -7.268048710144, 'lat_ts': 
 47.468781818043126, 'urcrnrlon': -1.7500559147572474, 'area_thresh': 0.1, 
 'llcrnrlat': 45.797409404407844, 'resolution': 'i', 'lat_0': 
 47.468781818043126})
 

 GEOS_ERROR: TopologyException: found non-noded intersection between
 8.67583 4.66292, 8.70206 4.66997 and 8.71039 4.67664, 8.67708 4.64997
 8.70205 4.66997

 It depends on the area and the resolution (polygons).

 I have version '0.99.3' of basemap.

 Any idea?
   
Stephane:  I'd say it's an issue with your geos library installation 
that basemap is linking to.  I don't see that error using your example 
for geos 2.2.3 or geos 3.0.3.

I'd suggest rebuilding the geos library, then recompiling basemap.

-Jeff

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Re: [Matplotlib-users] Basemap: GEOS_ERRORs

2009-07-02 Thread Stephane Raynaud 
Yep, the same library (physical, on our network)  fails depending only
the computer, thus on its own internal libraries called by GEOS.


By the way, I tried basemap with geos 3.0.4, and saw the simplify()
method working. That's funny!


On Thu, Jul 2, 2009 at 2:08 PM, Jeff Whitakerjsw...@fastmail.fm wrote:
 Stephane Raynaud wrote:

 Hi (Jeff),


 I recently performed updates to matplotlib and basemap.
 From this time, I have a random and reccurent error when I create a
 Basemap instance.
 Here is one example :



 from mpl_toolkits.basemap import Basemap
 Basemap(**{'lon_0': -4.5250263598141309, 'urcrnrlat':
 49.140154231678416, 'projection': 'cyl', 'llcrnrlon': -7.268048710144,
 'lat_ts': 47.468781818043126, 'urcrnrlon': -1.7500559147572474,
 'area_thresh': 0.1, 'llcrnrlat': 45.797409404407844, 'resolution': 'i',
 'lat_0': 47.468781818043126})


 GEOS_ERROR: TopologyException: found non-noded intersection between
 8.67583 4.66292, 8.70206 4.66997 and 8.71039 4.67664, 8.67708 4.64997
 8.70205 4.66997

 It depends on the area and the resolution (polygons).

 I have version '0.99.3' of basemap.

 Any idea?


 Stephane:  I'd say it's an issue with your geos library installation that
 basemap is linking to.  I don't see that error using your example for geos
 2.2.3 or geos 3.0.3.

 I'd suggest rebuilding the geos library, then recompiling basemap.

 -Jeff




-- 
Stephane Raynaud

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