The Nominal Geometry Relationships alignment, also available through the instruments right-click menu, provides an easy way to locate using geometry relationships that are point reducible using a Best-Fit. Point reducible relationships include:
Point to Point, Average Point Relationships
GR- Circles, GR -Slots, and GR-Ellipses
Spheres
This alignment tool provides an option to choose a selection of point reducible geometry relationships and perform a best fit using the centers of those features. The only requirements are that you have at least 3 point reducible relationships with nominals defined. Each feature will be listed as an entry in the Best Fit dialog and all the same controls are available.
The first step is to select GR-Features to use for the alignment. Select the features you wish to use within the selection window.
As soon as you select the features, the nominal and measured center points will appear in the graphics and a best fit window will open:
Use the Refit button to compute the solution and then press th Apply Transform button to apply the fit.
The idea behind this alignment is to Best-Fit the measured and nominal features together. Click here for information on the Best-Fit Alignment
Video Demo: SpatialAnalyzer: How to Align an instrument Using a Nominal Geometry Relationship Alignment