# Equal Area Cylindrical¶

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

## Parameters¶

Note

All parameters are optional for the Equal Area Cylindrical projection.

+lat_ts=<value>

Latitude of true scale. Defines the latitude where scale is not distorted. Takes precedence over +k_0 if both options are used together.

Defaults to 0.0.

+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.

+k_0=<value>

Scale factor. Determines scale factor used in the projection.

Defaults to 1.0.

+x_0=<value>

False easting.

Defaults to 0.0.

+y_0=<value>

False northing.

Defaults to 0.0.

Note

lat_ts and k_0 are mutually exclusive. If lat_ts is specified, it is equivalent to setting k_0 to $$\frac{\cos \phi_{ts}}{\sqrt{1 - e^2 \sin^2 \phi_{ts}}}$$