Nice function. Only, for large data sets it easily runs into memory problems. This could be improved by using the fact that only half of the matrix A in rbfAssemble is actually needed, since it is symmetric.
While this is not a perfectly implemented code for the file exchange (see J. D'Errico's comments) - it is exactly what I was looking for and has proven extremely helpful for my engineering problem. The big ticket item for me was the ability to extrapolate scattered data (as well as interpolate). Thank you for providing this tool.
