Let's say you have these x, y, and Slope variables:
x = linspace(0,1,100);
y = exp(x/2);
Slope = 0.5*y;
Then to plot y and Slope vs x, adding one point at a time, you can do this:
% create the figure and an empty plot graphics handles
figure;
hold on
h_y = plot(NaN,NaN);
h_slope = plot(NaN,NaN);
% set the limits
xlim([min(x) max(x)]);
ylim([min([y Slope]) max([y Slope])]);
% draw the curves
for k=1:length(x)
% update the data
set(h_y,'XData',x(1:k),'YData',y(1:k));
set(h_slope,'XData',x(1:k),'YData',Slope(1:k));
% pause for 0.1 seconds
pause(0.1);
end
