3D interpolation with interp3

Hi,

I have three dimensional scattered data and want to interpolate my data on X-Y-Z space, but when I use 'spline' method or 'cubic' method matlab error occurs:

"Insufficient finite values to interpolate."

It says that I must have at least 4 points in each dimension and I have, then where is the problem?

My gridmesh is 21x21x21 and I have 4 sample points in X, Y and 21 sample points in Z for each X,Y.

Thanks,

Rafet

Answer 1

[Matt J]

interp3 isn't meant for scattered data. You should be using scatteredInterpolant.