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.