Spilhaus

Added in version 9.6.0.

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

Parameters

Note

All parameters are optional.

+lon_0=<value>

Longitude of projection centre.

Defaults to 66.94970198.

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.

+lat_0=<value>

Latitude of projection centre.

Defaults to -49.56371678.

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.

+azi=<value>

Azimuth from north at the center of projection.

Defaults to 40.17823482.

+rot=<value>

Rotation of the projection.

Defaults to 45.

+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.

+k_0=<value>

Scale factor. Determines scale factor used in the projection. To reproduce the output of ESRI:54099, use +k_0=1.41421356237 (sqrt(2))

Defaults to 1.0.

+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.