Hi, Is there a (maintained) package somewhere with cubic spline capabilities? I need something that fulfills the following requirements:
* Scalar-valued functions of one variable, f(x), specified on uniform or non-uniform x-grids * Scalar-valued functions of two variables, f(x,y), at least specified on uniform grids that don't need to have the same spacing in x and y (i.e. rectangular, but not necessarily quadratic, grid cells) * Evaluation of function value and evaluate up to at least second order derivatives, i.e. both f'x, f'y, f'xx, f'xy and f'yy in the 2D case The only packages I've found that seem to approach this functionality are * https://github.com/timholy/Grid.jl - only up to quadratic splines, as far as I can tell from the readme; also unsure on if it can evaluate second order derivatives * https://github.com/gusl/BSplines.jl - only 1D interpolation, and base splines rather than exact cubic splines * https://github.com/EconForge/splines - Specifies Julia 0.2- in its require and hasn't been touched in four months => I doubt it works with my Julia installation which is at master. It would also probably take quite a lot of work to learn to use it, since it has no documentation at all. Are there any others that I've missed? Is there any non-official effort toward creating this functionality in Julia? Thanks in advance, // Tomas
