# Albers Equal-Area Conic

Name | Albers Equal-Area Conic
EPSG Code | 9822
GeoTIFF Code | CT_AlbersEqualArea (11)
OGC WKT Name | Albers_Conic_Equal_Area
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 | fase_easting | Linear |
Northing of false origin | 7 | FalseNorthing | fase_northing | Linear |

### Notes

This projection is supported by GCTP, and many other packages.

In Geosoft GXF format it is known by the name "*Albers Equal-Area Conic" indicating that it isn't an EPSG projection.

GeoTIFF: I have incorporated a version that corresponds to the GeoSoft, Intergraph and PCI definitions, and mostly like the second option here, but using NatOriginLat, and NatOriginLong rather than FalseOriginLat/FalseOriginLong or NatOriginLat/CenterLong as sometimes is done. This doesn't match the earlier AlbersEqualArea = LinearUnits + StdParallel1 + StdParallel2 + CenterLong + NatOriginLat + FalseEasting + FalseNorthing proposition form the GeoTIFF mailing list.

### PROJ.4 Organization

      +proj=aea   +lat_1=Latitude of first standard parallel
                  +lat_2=Latitude of second standard parallel
                  +lat_0=Latitude of false origin
                  +lon_0=Longitude of false origin
                  +x_0=Easting of false origin
                  +y_0=Northing of false origin