trafnar / robinson_projection Goto Github PK

All code is licensed under the GPLv2. 

Javascript library for projecting lng/lat coordinates to x,y coordinates using the Robinson projection. See it in use on our Spin the Globe feature on the http://afar.com home page.

Ported to Javascript by AFAR Media from ActionScript code written by Chris Youderian (http://www.flashmap.org/robinson-projection-in-as3-gpl/).

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Usage:

myProjection = new Robinson(map_width, map_height);
myProjection.project(lat, lng); // -> returns point object in the form {x:10, y:20}

You can also use the projectToCSS() method in the same way to get a point which matches the CSS coordinate system.