Oblique Mercator

Oblique Mercator

proj-string: +proj=omerc +lat_1=45 +lat_2=55


Central point and azimuth method


Azimuth of centerline clockwise from north at the center point of the line. If +gamma is not given then +alpha determines the value of +gamma.


Azimuth of centerline clockwise from north of the rectified bearing of centre line. If +alpha is not given, then +gamma is used to determine +alpha.


Longitude of the central point.


Latitude of the central point.

Two point method


Longitude of first point.


Latitude of first point.


Longitude of second point.


Latitude of second point.



Do not rotate axis.


Do not offset origin to center of projection.


Scale factor. Determines scale factor used in the projection.

Defaults to 1.0.


Longitude of projection center.

Defaults to 0.0.


False easting.

Defaults to 0.0.


False northing.

Defaults to 0.0.