Want to take a section of a curved line between 2 points

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I have an irregular curved line and I want to take a section of it between 2 known points. How might I do this

Answers (1)

William Rose
William Rose on 27 May 2021
interp1(x,y,xq,method) will interpolate in a smooth way. See the help for it here. You tell it the known x's and y's (vectors x,y) and xq, the vector of query x values - where you want to interpolate. For method, try the smooth options and see which you like: 'pchip', cubic', 'makima', or 'spline'. I like 'pchip' and 'makima' because they don't overshoot between points.
x=0:5; y=rand(1,6);
Example above: interpolation with different methods.

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