Extracting values from a plot 1

[bordocf]

Hi all,

Is there a way to extract values from a plot. I have created a plot in MATLAB and would like to extract the y-value for any given x-value along the x-axis. I have x and y data stored as arrays from a for-loop. However, if I want to extract the y value for x=0.225 (first value along the x-axis) I need to impose y(1) instead of y(0.225). Any thoughts?

 

[NS4U]

check out the fetch function... i haven't used it too much but that is probably what you're looking for

 

[cibachrome]

x = .2:.025:.3;
y = x.^2;

h = plot(x,y)

px = get(h,'XData');
py = get(h,'YData');

inx = find(x == .225)

py(inx)