plot first function
hold on
plot second function
h3 = plot third function
for t = 1 : whatever
calculate new X and Y to plot
set(h3, 'XData', new_X, 'YData', new_Y);
drawnow();
pause(time_interval_goes_here)
end
That is, record the returned handle of the plot you want to change, and inside the loop update the properties of that handle instead of making a new plotting call.
