matplotlib-devel Mailing List for matplotlib

John, Jeff,
Yes, I am on the matplotlib-devel list.
Coincidentally, while walking in to work yesterday, a possible 
workaround for the long-standing contourf mask bug occurred to me. In 
the process of testing it, I found that masking was not working as 
expected for either contour or contourf. I had done a little testing 
before sending in cntr.c and related changes, but obviously I missed the 
problem then. The cause should be quite simple and localized. I think I 
can track it down and come up with a clean fix, so that at worst only 
the original contourf bug remains (and maybe the workaround for that 
will, indeed, work). Please allow me a little time to work on this.
Eric
John Hunter wrote:
>>>>>>"Jeff" == Jeff Whitaker <js...@fa...> writes:
> 
> 
> Jeff> The basemap toolkit relies on the 'badmask' parameter in
> Jeff> contour/contourf to mask out areas outside the desired map
> Jeff> projection region in matplotlib 0.80. It works quite
> Jeff> well. Unfortunately, the new masked array support in CVS
> Jeff> doesn't (I get all kinds of weird artifacts, especially for
> Jeff> contourf but also for contour). Can the old badmask
> Jeff> functionality be added back in for 0.81, at least
> Jeff> temporarily until the masked array support stabilizes?
> 
> I don't have anything to add to this, I'm just replying so I can CC
> Eric Firing, who added the masked array support to contour, because I
> don't know if he is on the devel list.
> 
> JDH

>>>>> "Jeff" == Jeff Whitaker <js...@fa...> writes:
 Jeff> The basemap toolkit relies on the 'badmask' parameter in
 Jeff> contour/contourf to mask out areas outside the desired map
 Jeff> projection region in matplotlib 0.80. It works quite
 Jeff> well. Unfortunately, the new masked array support in CVS
 Jeff> doesn't (I get all kinds of weird artifacts, especially for
 Jeff> contourf but also for contour). Can the old badmask
 Jeff> functionality be added back in for 0.81, at least
 Jeff> temporarily until the masked array support stabilizes?
I don't have anything to add to this, I'm just replying so I can CC
Eric Firing, who added the masked array support to contour, because I
don't know if he is on the devel list.
JDH

The basemap toolkit relies on the 'badmask' parameter in 
contour/contourf to mask out areas outside the desired map projection 
region in matplotlib 0.80. It works quite well. Unfortunately, the new 
masked array support in CVS doesn't (I get all kinds of weird artifacts, 
especially for contourf but also for contour). Can the old badmask 
functionality be added back in for 0.81, at least temporarily until the 
masked array support stabilizes?
-Jeff
-- 
Jeffrey S. Whitaker Phone : (303)497-6313
NOAA/OAR/CDC R/CDC1 FAX : (303)497-6449
325 Broadway Web : http://www.cdc.noaa.gov/~jsw
Boulder, CO, USA 80305-3328 Office: Skaggs Research Cntr 1D-124