What are the problems that arise when fitting (2D or 3D) a set of scattered data? (non uniformly distributed)
I had some data I had to fit and I solved the problem using the
triscatteredinterp() matlab function which implements different types of methods: natural neighbor interpolations, linear interpolation and nearest-neighbor interpolation.
What I would like to understand is: what are the issues for this kind of fitting? Why should I choose a method instead of another one?
Another function is
delaunay() which implements the Delaunay triangulation. What is the difference between this and the other methods?