Parameter Name

Description

PARM1

The azimuth, in degrees east of north, of the positive Y axis of the coordinate system.

PARM2

Average elevation (above the ellipsoid) of the useful range of the coordinate system in system units.

ORG_LAT

The latitude, in degrees, of the origin of the projection.

ORG_LNG

The longitude, in degrees, of the origin of the projection.

MAP_SCL

Used only when defining a coordinate system that is to produce measurements on a scaled paper map. This value is the scale of the map, e.g., 100,000. Normally, this value is set to 1.0.

X_OFF

The false easting to be applied to all X coordinates, usually selected to cause all X coordinates within the coordinates system to be positive values of reasonable size. This is the X coordinate of the coordinate system origin.

Y_OFF

The false northing to be applied to all Y coordinates. This is the Y coordinate of the coordinate system origin.