I am not familiar with a function named POLYINTERP. There are DIAdem commands for interpolation (ChnD3Interp and MatD3Interp) that use the Global Parameter D3InterpMethChn. D3InterpMethChn specifies the interpolation method for these two DIAdem commands. These commands are also used in response to using the Interpolation (3D) dialog box.
If you are using a function or command named POLYINTERP, it may be a function defined in the VBScript you are using. If it is a function defined in your script, then you’ll want to look at the code for that function to determine how it is performing the interpolation.
Regards,
Eric M
