The Universal Transverse Mercator (UTM) projection class is an extension of the Transverse Mercator projection class that allows all UTM zones in a given horizontal datum to be represented by a single GeoCalc object.
The "UniversalTransverseMercator" Projection has the following Parameters, all of which are optional:
|
Parameter Name |
Parameter String |
Units |
|
Current zone number |
zone |
Long |
|
Currently in northern hemisphere |
is_north |
Long (0 = false, 1 = true) |
|
Automatically set zone |
autoset |
Long (0 = false, 1 = true) |
The actual Transverse Mercator parameter values to use when converting between geodetic and projected coordinate are determined from the values of the zone and is_north parameters.
If the autoset parameter is set to 1, then the zone and is_north parameters will be automatically recomputed each time a conversion from geodetic coordinates is performed, based on the input geodetic coordinates. Conversions from projected coordinates always use the UTM projection currently specified by the parameters.
Note: In GeoCalc version 6.3, Military Grid Reference System (MGRS) and U.S. National Grid (USNG) coordinate systems are defined with a UTM projection and a point style with the appropriate string format option.