How to perform interpolation on a 2D array in MATLAB

Question

How can I make a function of 2 variables and given a 2D array, it would return an interpolated value?

I have N x M array A. I need to inter

Answer 1

Use the spline() command like this:

% A contains N rows and 2 columns
pp = spline(A(:,1), A(:,2));
ppval(pp,3.44)

ans =

    0.4454