Second subplot disappearing

问题

I have a weird (and probably simple to solve) problem. I tried to plot (using panel) two plots:

a1 = subplot(2,1,1, 'Parent', handles.cpd_plot, 'Position', [0.1, 0.4, 0.85, 0.45]);
a2 = subplot(2,1,2, 'Parent', handles.cpd_plot, 'Position', [0.1, 0.1, 0.85, 0.15]);

but after plotting a2, a1 disappears. I see that its some problem with position, when I lift up a1 a bit ('Position', [0.1, 0.5, 0.85, 0.45]) its working (but it has to be >= 0.5). Where is the problem? Thanks!

回答1:

So it is probably happening because subplot deletes a plot when it is overlapping with the previous plot. I suspect that happens because of conflicting positions values between the subplot tile number (i.e. subplot(2,1,1) etc) that has its own default position, and the position you entered.

So instead of using subplot(m,l,p, 'position', [ a b c d]), you can solve this issue by using subplot just with the position info as follows:

subplot('position',  [0.1, 0.4, 0.85, 0.45])
plot(1:10);
subplot('position', [0.1, 0.1, 0.85, 0.15])
plot(1:10);

来源：https://stackoverflow.com/questions/14273315/second-subplot-disappearing