Geometry Fit Settings
The following controls are available through Best fit.
Geometry and Input selection
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Geometry Type Selector. Allows you to select the type of geometry to fit. This dropdown can be changed at any time to switch to a different geometry type.
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Point Selection Buttons. Choose from either Points, Clouds 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
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Planar Offset Direction. 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.
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Reverse. 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 of Offset
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Measured Side Settings. 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.
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Override. 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).
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Reverse Object Normal Vector. Flips the normal direction of the resulting geometry, without changing other characteristics (such as position or radius).
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Refit Geometry. Click this button to update the fit. If this but- ton has a blue background, it indicates that the fit is not currently valid and needs to be recalculated.
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Auto Refit. When checked, changing fit parameters will cause the fit to automatically recalculate.
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Project to Plane. When checked, you can select a plane to project points to prior to performing the fit.
Results
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Fit Summary. The maximum absolute error and RMS error of the fit is displayed in this section.
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Fit Tolerance. The current user-specified tolerance for the fit. To enter a new tolerance, type a new number into the field and then click Apply.
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View Point List. Opens the Point List for the fit (see below).
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Graph. Displays the Geometry Fit Graph for the fit (see below).
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Fit Details. 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.
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Name. Use this field to specify the name for the resulting geometry. The geometry will be placed into the active collection.
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Make Vector Group. 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.
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Make Geometry Relationship. When selected the fit is performed and a new GR-Features is built at the same time, creating dynamic geometry.
Create Entities
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Properties. The Properties button opens the properties from the vector group representing the fit. This button is only dis- played when Make Vector Group is checked.
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Cardinal Pts. When clicked, creates cardinal points (centroid, axis points, etc.) for the geometry.
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Offset Points. When clicked, creates points offset toward the geometry by an amount equal to the probe radius.
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Chart. When clicked, creates a histogram and run chart depict- ing point errors for the fit.