Albers Equal Area

Classification	Conic
Available forms	Forward and inverse, spherical and ellipsoidal
Defined area	Global
Alias	aea
Domain	2D
Input type	Geodetic coordinates
Output type	Projected coordinates

proj-string: +proj=aea +lat_1=29.5 +lat_2=42.5

Options

Required

+lat_1=<value>

First standard parallel.

Defaults to 0.0.

+lat_2=<value>

Second standard parallel.

Defaults to 0.0.

Optional

+lon_0=<value>

Longitude of projection center.

Defaults to 0.0.

+ellps=<value>

The name of a built-in ellipsoid definition.

See Ellipsoids for more information, or execute proj -le for a list of built-in ellipsoid names.

Defaults to “GRS80”.

+R=<value>

Radius of the sphere, given in meters. If used in conjunction with +ellps, +R takes precedence.

See Ellipsoid size parameters for more information.

+x_0=<value>

False easting.

Defaults to 0.0.

+y_0=<value>

False northing.

Defaults to 0.0.