The following controls are available through Best fit.
Geometry and Input selection
Geometry type selector: Allows you to select the type of geometry to fit. This drop-down list can be changed at any time to switch to a different geometry type.
Point selection buttons: Choose from either Points, Clouds, Cloud Points or Point Sets. Click the button, then select the points to include in the fit. The number of selected points will be displayed below these buttons--choose as many points as desired.
Planar Offset Direction section
Probing Direction drop-down button: Determines the planar offset method of the resulting planar geometry, using one of three possible methods: Probing Direction, Working Origin Positive, and Right-Hand Rule. This setting is used for plane, circle, and ellipse fits.
Reverse checkbox: Reverses the current offset direction. If the selected planar offset method does not offset in the correct direction, click this checkbox to reverse it.
Measured Side for Offset section
Above Plane/Outside drop-down button: These settings allow you to specify on which side of the feature the specified geometry was measured. For planar geometry (planes, circles, and ellipses), there are planar settings of Above Plane, Probe Center, and Below Plane. For solid geometry, there are radial settings of Inside, Probe Center, and Outside.
Override checkbox: Checking this checkbox allows you to enter a value to override the selected probe radii and therefore use a different offset value (not applicable to the Probe Center option).
Reverse Normal Vector checkbox: Flips the normal direction of the resulting geometry, without changing other characteristics (such as position or radius).
Refit Geometry button: Click this button to update the fit. If this button has a blue background, it indicates that the fit is not currently valid and needs to be recalculated.
Project to Plane checkbox: When checked, you can select a plane to project points to prior to performing the fit.
Auto Refit checkbox: When checked, changing fit parameters will cause the fit to automatically recalculate.
Results section
Fit summary fields: The maximum absolute error and RMS error of the fit is displayed in this section.
Tolerance field: The current user-specified tolerance for the fit. To enter a new tolerance, type a new number into the field and then click Apply.
Point List button: Opens the Geometry Fit Point Listing dialog for the fit.
Graph button: Displays the Geometry Fit Graph for the fit.
Fit Details button: Displays a detailed, geometry-specific summary of the fit. For example, it shows absolute and signed errors, calculated radii or sphere centers, and other important information.
Name field: Use this field to specify the name for the resulting geometry. The geometry will be placed into the active collection.
Make Vector Group checkbox: If checked, a vector group will be created that represents a comparison between the points and the resulting geometry from the fit. This is an excellent way to visualize errors in the fit.
Make Geometry Relationship checkbox: When selected the fit is performed and a new GR-Features is built at the same time, creating dynamic geometry.
Create Entities section
Properties button: The Properties button opens the properties from the vector group representing the fit. This button is only displayed when Make Vector Group is checked.
Cardinal Pts button: When clicked, creates cardinal points (centroid, axis points, etc.) for the geometry.
Offset Points button: When clicked, creates points offset toward the geometry by an amount equal to the probe radius.
Chart button: When clicked, creates a histogram and run chart depicting point errors for the fit.