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    pj_robinpublic

    pj_robin.js

    Robinson projection library - javascript port of PJ_robin.c from PROJ.4 (v4.7.0). Use it to make less-stretchified (but bendy around the edges) global interactive slippy maps :)

    Node.js usage

    Install using npm.

    npm install pj_robin
    

    Frivolous example code:

    var Robinson = require('pj_robin'),
        pt = Robinson.project(51.507222, -0.1275);
    console.log("London is at x:"+pt.x+" y:"+pt.y);
    

    Browser usage

    Use the minified javascript file (which can be rebuilt using the included Makefile).

    <script src='pj_robin.min.js'></script>
    <script>
        var pt = Robinson.project(51.507222, -0.1275);
        alert("London is at x:"+pt.x+" y:"+pt.y);
    </script>
    

    API reference

    Robinson.project(lat, lng) -> Point

    Project a latitude / longitude (in degrees).

    Returns an object with x and y properties.

    Aside: I think this conversion uses a unit sphere (TODO confirm this).

    Robinson.unproject(x, y) -> LatLng

    Unproject an x / y point.

    Returns an object with lat and lng properties.

    Robinson.remap(pt) -> Point

    Re-map a projected point to 0 <= x/y < 1 range.

    (useful for operations on square map tiles)

    Keywords

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    install

    npm i pj_robin

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    version

    0.1.0

    license

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