Finding where a slope becomes linear
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I recently took a class teaching Matlab and I'm trying to use it at my internship to find where our plotted data, using a vector of x and y data values, starts to become linear. I am trying to use a polyfit and then find the slope using the maximum slope and find the y value of where that begins. Can someone help me?
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Jan
on 15 Mar 2012
What is a vector of x and y data? What exactly is a linear slope? Are you looking for a zero curvature? How do you use the maximum slope to find the value where what begins?
Accepted Answer
Jan
on 15 Mar 2012
I'm not sure about the question. Perhaps you are looking for this:
curvature = diff(diff(x));
find(curvature < 1e-6)
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