Is there a package that can do a multidimensional (3D and higher) linear interpolation on an irregular grid, and extrapolate values beyond gridpoints? >From what I can see:
- Grid.jl can do linear extrapolation, but only on regular grids - The same is true for Interpolations.jl - ApproXD supports irregular grids, but only flat boundary conditions - Dierckx.jl only works in 2 dimensions - GridInterpolations.jl only works on simplex and rectangle grids (not exactly sure how it works as I haven't used it) Am I missing anything? I'm basically looking for a simple interpolant to a function f(x,y,z), that given irregular grids for x, y, and z can supply a value for e.g. f(x, y, z[end] + 0.1) by simply using the slope of the function between z[end-1] and z[end], holding x and y constant.
