Uploaded June 2013 | Updated September 2026, 2 weeks ago
The purpose of this exercise is to introduce the student to datum shifts, the Project tool, and the interpolation and contouring tool in ArcGIS Spatial Analyst.
You will compute the geodetic datum shifts between North American Datum 1983 (NAD83) and North American Datum 1927 (NAD27) using a specific transformation method (NADCON). To make the project useful you will compute the datum shift in seconds of longitude and seconds of latitude for all 58,000 of the USGS 7.5 minute quadrangles (1:24,000 scale ) in the continental United States.
The purpose of this exercise is to introduce the student to datum shifts, the Project tool, and the interpolation and contouring tool in ArcGIS Spatial Analyst.
You will compute the geodetic datum shifts between North American Datum 1983 (NAD83) and North American Datum 1927 (NAD27) using a specific transformation method (NADCON). To make the project useful you will compute the datum shift in seconds of longitude and seconds of latitude for all 58,000 of the USGS 7.5 minute quadrangles (1:24,000 scale ) in the continental United States.
