Check if a plot exists on an already open MATLAB subplot

Question

I have a subplot in MATLAB that has already been created, its axes colors set, etc, and all ready. I then plot a histogram on it.

Now I come back to it, (within a loop), and I want to check is there is something already 'plotted' on that subplot, histogram or normal plot. If there was something there, do_something, otherwise, do_something_else.

How to I check the 'occupancy' of a subplot or plot in general?

Answer 1

You could check whether or not the subplot has children:

isempty(get(yourSubplotHandle, 'children'))

This statement is true for empty subplots.