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': -7.2999968048710144, '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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