Standard Coordinate Systems

The projection specification for a coordinate system has the form "filename:zone", where the file name is the name of the definition file, chosen from the following list:

These files are stored in the Maptitude program folder (see User-Defined Coordinate Systems for more information on creating your own userprj file). Each definition file contains definitions for a number of coordinate systems and may be viewed with a text editor. Lines that begin with a number sign (#) are comment lines. Each definition starts with the zone identifier, which is a number or name enclosed by < > brackets. Use these identifiers to specify a zone in the "filename:zone" projection specification.

Meters are the default units. The "units=abbr" option string is required if units other than meters are used:

Examples

// 1927 State Plane for New York West
...
{"Projection", "nad27:3103", {"units=us-ft"}} // Standard U.S. Feet
...
// 1983 State Plane for Puerto Rico and the U.S. Virgin Islands
...
{"Projection", "nad83:5200", } // defaults to meters
...
// Japan zone 11
...
{"Projection", "world:japan-11", {"units=km"}} // Kilometers
...