Updating the positions and colors of pyplot.scatter

Question

I have been struggling with this for a while and can\'t get it to work. I am reading a file in chunks and scatter plotting data from it, and I would like to \"animate\" it

Answer 1

The solution I found for this involves using Normalize to make a normalised colour list based on the relevant data, mapping it to a ScalarMappable, and using that to set the face colour and c limits on each frame of the animation. With scat the handle of the scatter plot and speedsList provides the colour data:

n = mpl.colors.Normalize(vmin = min(speedsList), vmax = max(speedsList))
m = mpl.cm.ScalarMappable(norm=n, cmap=mpl.cm.afmhot)
scat.set_facecolor(m.to_rgba(speedsList))
scat.set_clim(vmin=min(speedsList), vmax=max(speedsList))

This does exactly what I expect it to.