Many papers, examples, and tutorials on interpolation with Radial Basis Functions (RBF) are understandably aimed at mathematicians, computer scientists, and mathematically inclined developers.

% Purpose: Interpolate four irregularly spaced grid points using provided indices. vN = linear_interpolate(lon_src_grid(yNW,xNW),lon_src_grid(yNE,xNE),lon_target,data ...