spatialcov(X,Y,D,ds​,smax)

A function file to calculate empirical spatial covariance

This function returns the empirical spatial co-variance of the signal D at known locations X and Y.
The co-variance is estimated at binned intervals with width ds out to a maximum distance smax.
The outputs of the function are the spatial co-variance values and the corresponding distance.

The function is useful for determining empirical spatial co-variance for least squares collocation.