I ran into a difference between the GTKAgg and TkAgg backends that is
confusing me. If I run this set of commands using the two different
backends, I get different results:
With the TkAgg backend, after show(), the figure is blank. With the
GTKAgg backend, once I call ioff, it seems to be ignoring me. In
fact, if I run this:
the GTKAgg backend does not show the plot of y2.
Is this a bug, something wrong on my system, or does it make sense
that the GTKAgg backend ignores everything after ioff()?