Michael Droettboom wrote:
> The transforms branch has seen very little outside of the matplotlib
> examples, so it's good to find all of these error cases. Fixed in r4569.
>
> Cheers,
> Mike
>
>> Michael: And one more - contourf will die if you there are no
>> contours at the requested levels. The error message looks like this:
>>
>> Traceback (most recent call last):
>> File "plotprecip.py", line 52, in <module>
>> cs = m.contourf(x,y,data,clevs,cmap=cm.s3pcpn)
>> File "/Users/jsw/lib/python/matplotlib/toolkits/basemap/basemap.py",
>> line 2425, in contourf
>> CS = ax.contourf(x,y,data,*args,**kwargs)
>> File "/Users/jsw/lib/python/matplotlib/axes.py", line 5017, in contourf
>> return mcontour.ContourSet(self, *args, **kwargs)
>> File "/Users/jsw/lib/python/matplotlib/contour.py", line 460, in
>> __init__
>> self.ax.add_collection(col)
>> File "/Users/jsw/lib/python/matplotlib/axes.py", line 1140, in
>> add_collection
>> self.update_datalim(collection.get_datalim(self.transData))
>> File "/Users/jsw/lib/python/matplotlib/collections.py", line 142, in
>> get_datalim
>> offsets, transOffset.frozen())
>> File "/Users/jsw/lib/python/matplotlib/path.py", line 481, in
>> get_path_collection_extents
>> raise ValueError("No paths provided")
>>
>> To trigger this, try running the plotprecip.py basemap example.
>>
>> -Jeff
>>
>
Michael: The fix for missing contours may have broken pcolor:
Traceback (most recent call last):
File "test.py", line 553, in <module>
p = m.pcolormesh(x,y,topodatin,shading='flat')
File "/Users/jsw/lib/python/matplotlib/toolkits/basemap/basemap.py",
line 2294, in pcolormesh
ret = ax.pcolormesh(x,y,data,**kwargs)
File "/Users/jsw/lib/python/matplotlib/axes.py", line 4836, in pcolormesh
self.add_collection(collection)
File "/Users/jsw/lib/python/matplotlib/axes.py", line 1140, in
add_collection
if len(collection._paths):
TypeError: object of type 'NoneType' has no len()
changing
if len(collection._paths):
to
if collection._paths and len(collection._paths)
in axes.py seems to fix it.
-Jeff
--
Jeffrey S. Whitaker Phone : (303)497-6313
Meteorologist FAX : (303)497-6449
NOAA/OAR/PSD R/PSD1 Email : [EMAIL PROTECTED]
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