This relationship type functions like a group to group relationship but with added inspection guidance. It assumes that the 1st group associated is the nominal or design group and uses this group for guidance in measuring the corresponding group.
This relationship offers a Trapping Controls section in the relationship properties. Additional user guidance can be turned on and off within the properties dialog as needed.
Trapping Controls
User closest point to match new measurements With this function enabled the point name control in the instrument interface is automatically set to a default “g2ngrTrap-p#”. As each point is measured it is automatically compared to the points in the nominal group and takes on the same name as the closest point. An initial alignment is helpful in ensuring the correct name is assigned.
Display closest point watch window This option turns on a watch window that displays the distance be- tween the probes current position and the closest point in the nominal group that has not yet been measured, and will update with each measurement.
Use view zooming with proximity When this option is enable the user is guided sequentially through the list of points and the view zoom in as the reflector approaches the destination point.
Ignore points beyond threshold This option provides a means to block bad measurements. It offers an optional rejection threshold relative to each of the nominal points beyond which measurements will not be excepted.
All additional controls including tolerances, constraints, weighting and vector control are standard and offer the same controls as other relationship types.