There are several ways to transfer data from an existing map to another map by computer. If the projection and parameters of both maps are known, analytic formulas may be used to convert rectangular coordinates of the first map to latitude and longitude and then to rectangular coordinates of the second map. This general solution, contained in a USGS computer program, involves inverse formulas for the first projection and forward formulas for the second projection.
Additional publication details
EFFICIENT TRANSFER OF DATA BETWEEN MAPS OF DIFFERENT PROJECTIONS.
American Congress on Surveying & Mapping
Falls Church, VA, USA
Larger Work Title:
Technical Papers of the American Congress of Surveying and Mapping
Technical Papers of the 43rd Annual Meeting of the American Congress on Surveying and Mapping.