The Orthographic projection closely resembles a globe in appearance, since it is a perspective projection from infinite distance. Only one hemisphere can be shown at a time. This projection is used chiefly for pictorial views and is used only in spherical form.
The "Orthographic" Projection has the following Parameters:
|
Parameter Name |
Parameter String |
Units |
|
Longitude of the Center of the Projection |
central_meridian |
|
|
Latitude of the Origin of the Projection |
latitude_of_origin |
|
|
Radius of the Sphere |
spherical_radius |
|
|
False Easting |
false_easting |
|
|
False Northing |
false_northing |
NOTE: The spherical form of this projection is used by setting the spherical_radius parameter to a non-zero value. When this value is set the radius of the sphere is used for forward and inverse projection from grid to geodetic coordinates within the system wherein this projection is incorporated.. If this parameter is set to a value less than or equal to zero, the SemiMajor and SemiMinor axes of the Ellipsoid will be used for the ellipsoidal version of the projection.