Hi, I tried sending this out to gsl-discuss a while ago but it was never approved, so I'm trying again and cc'ing it to help-gsl just in case.
Someone pointed out that the documentation for GSL 2.1 says that the 2D interpolation requires equally spaced grids, but it actually doesn't. Or to be more precise, it doesn't require that x[i] - x[i-1] == x[i+1] - x[i] (and likewise for y), which is what most people would take "equally spaced" to mean (I think). Could that be updated? I can try to prepare a patch against the latest git revision, if that would help. reference: https://github.com/diazona/interp2d/issues/8 :) David
