The Perspective Conic projection is produced by projecting the Earth perspectively from the center (or from some other point) onto a tangent or secant cone, along the standard parallels. The meridians are equally spaced straight lines converging at a common point representing one of the poles. The parallels are represented as unequally spaced concentric circular arcs centered on the pole of convergence of the meridians. The other pole may not be represented on the projection, though in some cases it may appear as a circular arc.
Along the standard parallels scale is true and there is no distortion. Other conformal or equal-area conics demonstrate less rapid distortion in a north-south direction, however, and are preferred to the Perspective Conic.
The "PerspectiveConic" Projection has the following Parameters:
|
Parameter Name |
Parameter String |
Units |
|
Longitude of the Center of the Projection |
central_meridian |
|
|
Latitude of Southern Standard Parallel |
standard_parallel1 |
|
|
Latitude of Northern Standard Parallel |
standard_parallel2 |
|
|
False Easting |
false_easting |
|
|
False Northing |
false_northing |