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Class for Lambert Conformal Conic projection. More...
#include <src/gproj.h>
Inherits: GMapProj
A conic conformal projections where parallels are unequally spaced arcs of concentric circles, more closely spaced near the center of the map. Meridians are equally spaced radii of the same circles, thereby cutting parallels at right angles. Scale is true along two standard parallels, normally, or along just one. Used for maps of countries and regions with predominant east-west expanse. -- (J. Snyder, "Map Projections - A working manual").
[public]
Default constructor; must call init() before any conversion.
[public]
construct a Lambert (CC) projection.
major/minor | axis; lat1/lat2 first and second standard parallel; both are radians c_lon/c_lat central longitude and latitude; both are radians x_false/y_false false easting and northing. both are radians |
[public]
initialize for the Lambert projection. Must be called before any foward/inverse conversion can happen.
uses | same parameter as in second constructor. longitudes/lattitudes are all radians. |
[public]
Forward conversion from (longitude,latitude) to Lambert coordinates in meters.
(lon, | lat) MUST be radians!!! |
[public]
Inverse conversion from Lambert 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 |