cconv - A Coordinate Conversion node module
In the chaotic world of GIS coordinate systems, a node module rises to bring a message of hope and understanding.
This module converts from geodesic latitude/longitude(degrees) to projected coordinates Easting/Northing (meters), and also the other way around.
Usage
var cconv= require('cconv');
cB = cconv(sridA, sridB, cA, f);
var sridA = 4258;
The srid of the coordinate system (eg: ETRS89)
var sridB = 3035;
The srid of the projected system (eg: ETRS89-LAEA)
Forward
var f = true;
var cA = [50.000,5.000];
[ latitude, longitude]
var cB = [];
[ Easting, Northing ]
Reverse
var f = true;
var cA = [3962799.45, 2999718.85 ];
[ Easting, Northing ]
var cB = [];
[ latitude, longitude ]
install
npm install cconv
References
http://www.epsg.org/guides/docs/G7-2.pdf
(pag72 mainly)