I have plotted some data in MATLAB (see figure below). How can I extract the x and y intercepts from the plot without manually estimating them?
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How did you plot the data? Your plot inputs should be your x and y interceptions. – zeeshan khan Mar 09 '19 at 21:13
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I am not sure I understand what you mean. The data I have plotted are not continous points. Its a finite number of points which do not necesserily include points on the interceptions. – Elias S. Mar 10 '19 at 00:08
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Try this:
x0 = interp1(y,x,0,'spline');
y0 = interp1(x,y,0,'spline');
Similar question/answer here, except you'll need to play with the method and maybe even the extrapolation as described on this Matlab page.
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Post showing impacts of different interpolation [methods](https://stackoverflow.com/a/53524024/8239061) – SecretAgentMan Mar 10 '19 at 16:57