Classification: Transverse and oblique cylindrical
Available forms: Forward and inverse, spherical and ellipsoidal
Defined area: Global, with full accuracy within 3900 km of the central meridian
Alias: etmerc
Domain: 2D
Input type: Geodetic coordinates
Output type: Projected coordinates
+proj=etmerc Copy
+proj=etmerc
+lon_0
+approx
+algo
+lat_0
+k_0
+x_0
+y_0
Preps an ExtendedTransverseMercator projection
Optional
projection specific parameters
optional precompute function (used by UTM)
ExtendedTransverseMercator forward equations--mapping lon-lat to x-y
lon-lat WGS84 point
ExtendedTransverseMercator inverse equations--mapping x-y to lon-lat
ExtendedTransverseMercator point
Extended Transverse Mercator
Classification: Transverse and oblique cylindrical
Available forms: Forward and inverse, spherical and ellipsoidal
Defined area: Global, with full accuracy within 3900 km of the central meridian
Alias: etmerc
Domain: 2D
Input type: Geodetic coordinates
Output type: Projected coordinates
Projection String
Required Parameters
+lon_0: Longitude of the central meridian.Optional Parameters
+approx: Use the faster Evenden-Snyder algorithm, less accurate beyond 3°.+algo: Select algorithm from "auto", "evenden_snyder", or "poder_engsager".+lat_0: Latitude of origin.+k_0: Scale factor on the central meridian.+x_0: False easting.+y_0: False northing.