How to I generate continuous arrays from two arrays with different data points?
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I would like to take two different array data sets:
e.g.
x1 = [ 1 5 8 20 ];
y1 = [10 12 15 20];
x1 = [2 6 8 19 21];
y1 = [1.5 5.3 16 22];
I would like to take these and turn the y values into continuous arrays along the same x array (say x = 0:1:22). That way I can find approximately what measurements of y1 and y2 are at for say x=2 and do things such as calculate the percent difference. Please let me know if this is not enough clarification.
Thank you!
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Answers (1)
the cyclist
on 2 Aug 2023
Edited: the cyclist
on 2 Aug 2023
Your question is not perfectly clear to me, but it sounds like you could use the interp1 function to interpolate each data set to a common set of x points.
x1 = [ 1 5 8 20 ];
y1 = [10 12 15 20];
x2 = [2 6 8 19 21];
y2 = [1.5 5.3 16 22 23]; % I changed this, because yours were not the same length
xq = 0:22;
y1q = interp1(x1,y1,xq)
y2q = interp1(x2,y2,xq)
There are NaN values because interp1 will not extrapolate by default. See the documentation for options.
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