You may define geodetic datum transformations using the Canadian NTv2 transformation method. The Canadian NTv2 defines an accurate transformation from NAD 27 to NAD 83 for Canada. The shift values for geographic areas are stored in a single grid file, representing latitude and longitude shifts (named with the extension .gsb). GeoCalc uses grid files in a format published and provided by the Canadian Government.
The "CanadianNTV2" DatumShift has the following Parameters:
|
Parameter Name |
Parameter String |
Units |
|
Canadian Transformation File |
cantrans_file |
String |
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