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Click Tools > Custom Commands, and start the MDR Validation tool.
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Open the related session file. Select Objects List File, and click Source.
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If you have an objects list file, type in the pathname or browse to the file. For the utility to automatically generate a list file for your source data set, click Create Objects List File.
The Smart 3D status bar displays Created Objects List File.
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If the destination data set is in another session file, go to the utility in that session file and select Destination. Repeat step 3.
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To limit the comparison, select one of the analysis options.
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Limit Analysis to Selected Objects
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Limit Analysis to Selected Object Types
If you select Limit Analysis to Selected Object Types, place a check mark beside each object type to use.
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Set the Coordinate and Length Precision options, which enable you to control the precision of validation.
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Click Generate Data For Validation.
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When the data for validation gets generated, click Process Generated Data. You must select this command each time the data has been regenerated for any change in settings.
The status bar displays progress messages when processing the data and also when the processing is completed.
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Repeat steps 5-10 if you have a separate session file containing the destination data.
Make sure you use the same data generation options (Limit Analysis options, object types, and precision settings) for both source and destination data.
Otherwise, you will not get accurate comparisons.
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When the process is completed, click Review Results to review the results. Select Differences Only to see only the differences that were found.