Gnomonic

Classification

Pseudocylindrical

Available forms

Forward and inverse, spherical projection

Defined area

Global

Alias

gnom

Domain

2D

Input type

Geodetic coordinates

Output type

Projected coordinates

Gnomonic

proj-string: +proj=gnom +lat_0=90 +lon_0=-50

Parameters

Note

All parameters are optional for the Gnomomic projection.

+lon_0=<value>

Longitude of projection center.

Defaults to 0.0.

+R=<value>

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

+x_0=<value>

False easting.

Defaults to 0.0.

+y_0=<value>

False northing.

Defaults to 0.0.