Re: [matplotlib-devel] contour/contourf and masked arrays

[Eric F. <ef...@ha...>]

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