[Matplotlib-users] updating contours

[Nicolas P. Rougier]

If you only need (a lot of) contours on (a lot of) images, vispy or glumpy might be an option (they both use GPU to compute contours).
See for example: http://glumpy.github.io/_static/screenshots/isocurves.png



Nicolas

> On 26 Oct 2015, at 16:07, Michael Droettboom <mdroettboom at continuum.io> wrote:
> 
> You're correct that there is no equivalent -- contour is one of those "computed" things that can't be directly updated from the original data.  You don't need to do a whole `cla()` though.  Removing the contour artist and calling contour again should be sufficient.
> 
> Mike
> 
> On Fri, Oct 23, 2015 at 11:56 AM, Slavin, Jonathan <jslavin at cfa.harvard.edu> wrote:
> Hi,
> 
> I'm looking at a series of images and want to include overplotted contours.  To update the image I just need to use the set_data() method of the AxesImage object.  However, as far as I can tell, there's nothing similar for the QuadContourSet object.  I tried set_array() but that didn't work.  Am I missing something?  Does anyone have any suggestions for how to update the contours?  Of course if necessary I could do a cla(), but that would be slow, I think.
> 
> Regards,
> Jon
> -- 
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> Jonathan D. Slavin                 Harvard-Smithsonian CfA
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> Michael Droettboom
> Continuum Analytics
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