Equidistant Conic

Name Equidistant Conic
GeoTIFF Code CT_EquidistantConic (13)
OGC WKT Name Equidistant_Conic
Supported By GeoTIFF, GXF, OGC WKT

Projection Parameters

Name EPSG # GeoTIFF ID OGC WKT Units Notes
Latitude of first standard parallel 1 StdParallel1 standard_parallel_1 Angular
Latitude of second standard parallel 2 StdParallel2 standard_parallel_2 Angular
Latitude of false origin 3 NatOriginLat latitude_of_center Angular
Longitude of false origin 4 NatOriginLong longitude_of_center Angular
Easting of false origin 6 FalseEasting false_easting Linear
Northing of false origin 7 FalseNorthing false_northing Linear


In Geosoft GXF format it is known by the name "*Equidistant Conic" indicating that it isn't an EPSG projection. The GXF definition also refers to the origin as the false origin rather than the natural origin.

PROJ.4 Organization

  +proj=eqdc  +lat_1=Latitude of first standard parallel
              +lat_2=Latitude of second standard parallel
              +lat_0=Latitude of center 
              +lon_0=Longitude of center
              +x_0=False Origin Easting
              +y_0=False Origin Northing