Re: [Matplotlib-users] How Clear Points Without Wiping Everything?

[Jerzy K. <jer...@un...>]

Benjamin Root  :
> Just about any mpl plotting function (plot(), scatter(), hist(), etc.) 
> returns an object.  Most of the time, users do not save the result 
> into a variable, but if you want to do advanced tricks, you will need 
> to save those returns.
Sorry for a shameless attempt to add something to this, but actually 
here you don't need it, these collections are accessible through the 
current axes:


plt.plot([0, 1, 2, 3, 4], [4, 3, 2, 1, 0])
pts = plt.scatter([1, 2, 3], [1, 2, 3])

ax=plt.gca()
...
del ax.collections[:]

(Or, say, del ax.lines[:] to remove the first line ; I do it often when 
I plot a solution of a differential equation, a trajectory, keeping just 
a few last segments).

==

This reminds me a nuisance... Under Windows XP, ion() is not too 
compatible with show().
TKAgg (by default), WXAgg and GTKAgg bomb Bens program (and without 
draw() nothing is plotted).

Jerzy Karczmarczuk