### Constructing a Best Fit or Best Fit Recompensate Plane

A 'best fit ' plane can be constructed through three or more features. The best fit construction method takes the actual measured points, rather than the ball's center (as in the case of best fit recompensate). In both cases PC-DMIS computes a least squares plane, one for which PC-DMIS minimizes the average squared perpendicular distance from the data points to the plane.

To Construct a Best Fit or a Best Fit Recompensate Plane:

1. Access the Construct Plane dialog box (Insert | Feature | Constructed | Plane).

2. Select either the Best Fit or BF Recomp option.

3. Select at least three features.

Note: If you choose Best Fit Recompensate at least one feature must be a point.

4. Click the Create button.

The Edit window command line for this option would read:

CONSTR/PLANE,BF,feat_1,feat_2, …

OUTLIER_REMOVAL/(ON | OFF),stdDevMultiple

FILTER/(ON | OFF), WAVELENGTH=cufoffWavelength

(Uses the actual measured points for construction.)

or

CONSTR/PLANE,BFRE,feat_1,feat_2, …

OUTLIER_REMOVAL/(ON | OFF),stdDevMultiple

FILTER/(ON | OFF), WAVELENGTH=ctfoffWavelength

(Uses the probe's center for measurement purposes.)

Constructing a Plane from Three or More Points | A - Best fit plane constructed from four points (PNT1, PNT2, PNT3, and PNT4).

More:

Remove Outliers / Standard Deviation Multiple

Apply Gauss Filter / Cutoff Wavelength