#### Apply Gauss Filter / Cutoff Wavelength

The Best Fit (BF) and Best Fit Recompensate (BFRE) constructed planes have the option of filtering the deviations of the measured data points from the best fit plane computed from the measured data. The Apply Gauss Filter check box lets you apply a Gaussian filter with a cutoff wavelength. Generally, a larger cutoff wavelength produces smoother filtered data. If you've selected the Remove Outliers check box and are filtering the data, then outlier data is removed prior to filtering. For additional information on Gaussian filtering, see the "Gaussian" topic under "Constructing a Filter Set".