Polyfit for more than one variable?

Question

Does it exists a function similar to polyfit to interpolate n variables? polyfit use x, y, N, where N is the degree, instead I would like to use x, y, z, and N. Any idea?

Answer 1

To the best of my knowledge, there isn't a direct function which you can use in MATLAB. However, you can solve the problem manually using fitlm.