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.
Note
The default convention is to interpret this value as decimal degrees. To specify radians instead, follow the value with the "r" character.
Example: +lat_1=1.570796r
See Projection Units for more information.
- +lat_2=<value>¶
Second standard parallel.
Defaults to 0.0.
Note
The default convention is to interpret this value as decimal degrees. To specify radians instead, follow the value with the "r" character.
Example: +lat_2=1.570796r
See Projection Units for more information.
Optional¶
- +lon_0=<value>¶
Longitude of projection center.
Defaults to 0.0.
Note
The default convention is to interpret this value as decimal degrees. To specify radians instead, follow the value with the "r" character.
Example: +lon_0=1.570796r
See Projection Units for more information.
- +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.