Re: [Matplotlib-users] Can I update symbol positions and colors in a collection?

[Ryan M. <rm...@gm...>]

Eric Bruning wrote:
> I have scatterplots on several axes that are dynamically updated, and
> thus I need to keep track of each of the PolyCollection artists that
> represent the scattered data. I would like to keep the same
> PolyCollection object but update the positions, colors, etc. of the
> symbols, possibly changing their total number, something along the
> lines of Line.set_data.
> 
> Did I miss a method that would do what I want?
> 
> I have already looked at removing the collection from the axes and
> replotting, but for some reason my axis limits get reset when I do so.

Guys,

I helped Eric out with this offline, and obviously set_array is for the 
colors, but the only solution we could come up with was to directly 
reset the PolyCollection._offsets member.  This seems a little hacky. 
Is there any reason that there is not an set_offsets() (or something 
like it)?  Any reason why I shouldn't code up a patch?

Ryan

-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma