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Albers Conical equal-area projection class. More...
#include <src/gproj.h>
Inherits: GMapProj
One of the most commonly used projection for maps of theconterminous United States. It uses two standard parallels.
[public]
this constructor has no parameters. You mush call init() before any projection can take place using this object.
[public]
create an Albers map projection object with the given parameters.
r_maj, | r_min is the major/minor axis of the earth lat1/lat2 is the first and second standard parallel (in radians) lon0/lat0 is the central longitude and origin latitude (in radians) fs_east/fs_north is the false easting/norhting. |
[public]
setup the parameters for the Albers projection. This is called by the constructor with the same set of parameters.
[public]
Forward conversion from (longitude,latitude) to Albers coordinates in meters.
(lon, | lat) MUST be radians!!! |
[public]
Inverse conversion from Albers coordinates to (longitude, latitude). (x,y) must be in *meters*; and (lon, lat) will be in *radians*.
Documentation generated by lqian@lqian-sun on Wed Jul 14 09:36:10 EDT 1999 | Kdoc |