On Sun, Dec 4, 2011 at 9:59 AM, Manuel Jung
<mj...@astrophysik.uni-kiel.de>wrote:
> Hi,
>
> I have plt.pcolormesh plot i would like to animate. So i've taken a
> look at the various examples and decided to go with the FuncAnimation
> routine. This works for me, but im using for every frame a new call to
> plt.colormesh and i am not updating the underlaying data, like in this
> example
> http://matplotlib.sourceforge.net/examples/animation/dynamic_image.html
> This is because there seems to be no set_data, set_array or similar
> for the from plt.colormesh returned object (an instance of
> matplotlib.collection.QuadMesh). Am i right? Is there any way i can
> update the data structures of plt.colormesh?
>
> Hi Manuel,
You can call QuadMesh's `set_array` method, just as you can for images.
(You suggest there is no set_array method for QuadMesh; are you sure about
that?) The strange part is that it expects a 1d array, where as colormesh
accepts arrays of various dimensions.
>>> import numpy as np
>>> import matplotlib.pyplot as plt
>>> mesh = plt.pcolormesh(np.random.rand(10,10))
>>> mesh.set_array(np.random.rand(10,10).ravel())
>>> plt.draw()
set_array doesn't complain if you remove the call to `ravel`, but
`plt.draw()` will complain.
-Tony
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