Azimuthal Equidistant¶

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

Options¶

Note

All options are optional for the Azimuthal Equidistant projection.

+guam¶: Use Guam ellipsoidal formulas. Only accurate near the Island of Guam (\(\lambda\approx 144.5^{\circ}\), \(\phi\approx 13.5^{\circ}\))

+lat_0=<value>¶

Latitude of natural origin, latitude of false origin or latitude of projection centre (naming and meaning depend on the projection method).

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_0=1.570796r

See Projection Units for more information.

+lon_0=<value>¶

Central meridian/longitude of natural origin, longitude of origin or longitude of false origin (naming and meaning depend on the projection method).

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.

+x_0=<value>¶

False easting, easting at false origin or easting at projection centre (naming and meaning depend on the projection method). Always in meters.

Defaults to 0.0.

+y_0=<value>¶

False northing, northing at false origin or northing at projection centre (naming and meaning depend on the projection method). Always in meters.

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.