Limit on the number of plot calls

Hi, is there a limit to the number of times one can call

    > ax.plot(x,y) ?

No, but if you are making a lot of them, say over 100, then
performance will start to suffer, and you may be better off with a
LineCollection. plot (which creates a Line2D) is good for making a
few lines with possibly very many points each, and LineCollection is
good for generating lots of line (or segments) with not too many
points each.