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The statistical calculations during a Positional Accuracy Assessment session can be adjusted by changing the calculation method. You can choose to use either the National Geospatial-Intelligence Agency (NGA) standard or United States Geological Survey (USGS) standard. Each one calculates the values based on the specifications defined by those agencies.
When the calculation method is changed, the statistics are automatically recalculated.
- Start a PAAT session.
- Click the Show Results button
on the Positional Accuracy Assessment toolbar.
The Positional Accuracy Session Results dialog box appears.
- In the Settings area of the Session Results tab, click the Calculation Method drop-down arrow to change the calculation method.
The calculation method used to determine the change in statistics. Either the National Geospatial-Intelligence Agency (NGA) Standard or United States Geological Survey (USGS) Standard can be used. Each standard is based on a specification for the NGA and USGS, respectively.
The statistics are recalculated using the method you choose.
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