Target Computation
Different instrument types require different default approaches to shot computation. Within the User Options on the Analysis Tab is a selection for how measured points are computed based on the contributing observations.
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User only most recent shot. This method considers only the most recent observation recorded from each instrument in computing the coordinates of a point. Prior observations will be disabled as new observations are added.
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Use most recent shot from each face. This option considers both the most recent shot from each face (front/back) as well as shots from each contributing instrument.
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Don’t change prior measurements at all. This option will append additional observations to the existing list without altering the prior shot status.
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Force a new point for each measurement (add * if necessary). This option ensures that any additional observations will be recorded in separate points. If you measure “P6” for example and try to record the same point a second time it will be recorded in the tree as a separate point in the same group named “P6*”.
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Deactivate All Prior Shots. This option ensures that only the most recent shot is used to compute the point. All shots from all other instruments will be disabled.
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Remove All Prior Shots. This option will delete any prior observations on the current measured point.
The additional option Ignore distance Measurements when possible (total station) can also be enabled if desired. This will compute point locations using the shot angles only.
Move Objects and Points created by an instrument when it is moved. This option should most always be left on as many operations expect this behavior. If it is turned off, measure points will not move with instruments and will convert to constructions if an instrument is moved. This could be a helpful warning and can be corrected using the command Re-Compute Targets from Shots but is not recommended for most operations.
Reporting Tolerances Reporting tolerances for Target Computation can also be set here. These are the default warning levels used with the following:
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Angular Point Error. Used to identify points with angular error that exceeds the specified value.
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Uncertainty Tolerance. Used to identify points with a an uncertainty greater than the specified value.