Notes on a method to transform digitized coordinates to geographic coordinates

The process of conversion of coordinates (typically carte- sian) obtained from digitizing devices into application de- ned coordinate systems is discussed. Application of a secondary function representing the transformation of the application coordinate system to and from cartesian space will greatly simplify conversion of highly non-linear sys- tems. Although emphasis is given to cartographic conver- sions the method will work with a wide variety of digitizing problems.