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What is the NADCON Datum Transformation method? Can I use this method with the Geographic Calculator?

April 26, 2017calculator datum geographic method nadcon Transformation

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What is the NADCON Datum Transformation method? Can I use this method with the Geographic Calculator?

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The NADCON method transforms coordinate values between the North American Datum of 1927 (NAD 27) and the North American Datum of 1983 (NAD 83). The National Geodetic Survey (NGS) NADCON method provides a transformation that is accurate to within 0.15-0.5 meters and is highly recommended for NAD27 and NAD83 conversions within the U.S. and other territories. The NGS NADCON method applies a simple interpolation algorithm using a gridded set of standard datum shifts as parameters. The shift values for a geographic area are stored in a set of grid files, one representing latitude shifts (named with the extension .las) and one representing longitude shifts (named with the extension .los). The Geographic Calculator uses grid files in a format published and provided by NGS.