#### Apply Gauss Filter / Cutoff Frequency

The Best Fit (BF) and Best Fit Recompensate (BFRE) constructed circles have the option of filtering the deviations of the measured data points from the best fit circle computed from the measured data. The Apply Gauss Filter check box is a Gaussian filter with a cutoff frequency input as undulations per revolution (UPR). Generally, a lower cutoff frequency 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.