Thread Subject: How to split a curve given by matlab?

Hi, I've come to a very tough problem. I have fitted a curve using the curve-fitting toolbox by some distant points. Now, I should discretize this curve, but I am doubting that if I put the point of x one by one from the x-axis, maybe there is more than one points of y in the y-axis. I wish to split this curve on average. How can give me a help? Very Urgent for me!!!

Sorry, I don't fully understand your question. If you need only the points though, can't you just use the prognosis function of the curve to get the y-values for the x-values you need?