Origin provides several built-in surface fitting functions under the Surface function category which can be used to perform fitting on 3D data. The surface fitting function is similar to the nonlinear fitting function.
Surface Fitting is only available in OriginPro.
Minimum Origin Version Required: OriginPro 9.0 SR0
This tutorial is associated with the Surface Fitting (Pro Only) folder in the Tutorial Data.opj (<Origin EXE Folder>\Samples\Tutorial Data.opj).