I'm asking if anyone knows a tool to do a linear interpolation that supports masks / barriers.
I need to do interpolation on a archipelago and no points on opposite shore should affect on a other shore. So the water area should behave as a mask polygon.
The known points are access times to the location and I want values between points to be linear. Are there other linear interpolation methods than TIN interpolation that use barycentric interpolation?
gdal_grid handles the interpolation but is missing the mask option. Are there some other tools?
I would be glad for any help and advise.