When you plot things in Matlab, the most recently plotted data series is placed on top of whatever's already there. For example:
figure; hold on plot(sin(linspace(0,pi)),'linewidth',4,'color',[0 0 1]) plot(cos(linspace(0,pi)),'linewidth',4,'color',[1 0 0])
Here, the red line is shown on top of the blue line (where they intersect). Is there any way to set "how deep" a line is drawn, so that you can plot things beneath what's already there?