Better interpolation results

Problem:

How can I get better results from interpolation?

Solution:

1. Be sure your destination zone has a greater density of points than your original data set and that the destination zone is a good match for the region defined by your points. To create specially shaped 3D zones use one of the add-ons included with Tecplot 9.2 or later. See the documentation for Tetra Grid Extrude and Prism Grid.
2. Axis variables should have similar ranges during interpolation to avoid round-off error. If necessary create a temporary variable by multiplying or dividing one of the axis variables by a large number. Assign this new variable to the axis interpolate then reassign the original variable.