The <TRANSVERSE-MERCATOR-SRS> element defines a spatial reference system based on the Transverse Mercator projection. The most common Transverse Mercator projections used are the UTM projections. This element is required if your map or services use EPSG codes based on the Transverse Mercator projection. For more information about the EPSG codes used in OpenGIS services, see http://www.epsg.org.

Frequency Parent Elements (this element is valid within): PO+ <SRS-LIST>

Attributes Description srs The SRS code. For example, use "EPSG:32611" for UTM Zone 11 North. Required. title The name of the projection to be displayed to the user. Required. central-meridian The central meridian. Required. ellipsoid The name of the ellipsoid. See valid values at the bottom of this page. Required. false-easting The X adjustment. Specify in meters unless the projection units are feet, in which case the false easting and northing values should also be in feet. Required. false-northing The Y adjustment. Specify in meters unless the projection units are feet, in which case the false easting and northing values should also be in feet. Required. reference-latitude The reference latitude. Required. scale-factor The projection's scale factor. Required. show-zone Specifies whether to show the zone of the projection in the default reports. Applicable to Transverse Mercator projections only. Valid values are "true" or "false". Optional, defaults to "false". units The map units of the projection, usually "meters". Can also be set to "feet". Note that if feet are used, the false easting and northing values should also be in feet. Required.

Frequency Description (in this context) PO+ The <TRANSVERSE-MERCATOR-SRS> element is optional but may appear one or times within the <SRS-LIST> element.

Examples:

<TRANSVERSE-MERCATOR-SRS
 srs="EPSG:26910"
 title="UTM zone 10 NAD83"
 ellipsoid="GRS 198080"
 central-meridian="-123.0"
 reference-latitude="0.0"
 false-easting="500000.0"
 false-northing="0.0"
 scale-factor="0.9996"
 units="meters" />

<TRANSVERSE-MERCATOR-SRS
 srs="EPSG:32611"
 title="UTM zone 11 WGS84"
 ellipsoid="WGS 84"
 central-meridian="-117.0"
 reference-latitude="0.0"
 false-easting="500000.0"
 false-northing="0.0"
 scale-factor="0.9996"
 units="meters" />

Hint: If you know the zone, the central meridian can be calculated using the following formula:

central-meridian = (6 * abs(zone)) - 183.0;

Valid ellipsoid values:

Airy 1830
Airy Modified 1849
Australian National Spheroid
Average Terrestrial System 1977
Bessel 1841
Bessel Modified
Bessel Namibia
Clarke 1866
Clarke 1880 (Benoit)
Clarke 1880 (IGN)
Clarke 1880 (IGN)
Clarke 1880 (RGS)
Clarke 1880 (Arc)
Clarke 1880 (SGA 1922)
Everest 1830 (1937 Adjustment)
Everest 1830 (1962 Definition)
Everest 1830 (1967 Definition)
Everest 1830 (1975 Definition)
Everest 1830 Modified
GEM 10C
GRS 1967
GRS 1980
Helmert 1906
Indonesian National Spheroid
International 1924
Krassowsky 1940
NWL 9D
OSU86F
OSU91A
Plessis 1817
Struve 1860
War Office
WGS 72
WGS 84
Xian 1980