Re: [Matplotlib-users] how to erase items in figures

[John H. <jd...@gm...>]

On Jan 28, 2008 2:06 PM, j vickroy <jim...@no...> wrote:
> Hello users,
>
> I wish to repeatedly re-plot labels and contour data on a figure since
> redrawing the figure is temporally expensive.  The attached script (I
> apologize for its length), hopefully, illustrates a simplified version
> of what I'm trying to do -- contour temporally-varying data on a map
> projection.

matplotlib has some support for the kinds of things you are trying to
do -- eg draw an expensive part of the figure, save it, plot something
on top of it, erase it, restore the original figure, etc.  This is
convered in some detail in the animation cookbook recipe.  Although
you are not doing animation, the concepts are quite similar in that
both require copying and restoring a background, and updating the
"animated" object.

http://www.scipy.org/Cookbook/Matplotlib/Animations

JDH