This is an updated and modernized version of REGRIDPACK, a suite of Fortran routines for interpolating values between one-, two-, three- and four-dimensional arrays defined on uniform or nonuniform orthogonal grids. This operation is commonly referred to as regridding. Linear or cubic interpolation can be selected independently in each dimension. Extrapolation is not allowed. The subroutines in REGRIDPACK cannot be used to transfer values on non-orthogonal (randomly scattered) data grids.

WWW: https://github.com/jacobwilliams/regridpack
