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    tilelive-mapnik

    0.6.18 • Public • Published

    tilelive-mapnik

    Renderer backend for tilelive.js that uses node-mapnik to render tiles and grids from a Mapnik XML file. tilelive-mapnik implements the Tilesource API.

    Build Status Build status

    Installation

    npm install tilelive-mapnik
    

    Though tilelive is not a dependency of tilelive-mapnik you will want to install it to actually make use of tilelive-mapnik through a reasonable API.

    Usage

    var tilelive = require('tilelive');
    require('tilelive-mapnik').registerProtocols(tilelive);
     
    tilelive.load('mapnik:///path/to/file.xml', function(err, source) {
        if (err) throw err;
     
        // Interface is in XYZ/Google coordinates.
        // Use `y = (1 << z) - 1 - y` to flip TMS coordinates.
        source.getTile(0, 0, 0, function(err, tile, headers) {
            // `err` is an error object when generation failed, otherwise null.
            // `tile` contains the compressed image file as a Buffer
            // `headers` is a hash with HTTP headers for the image.
        });
     
        // The `.getGrid` is implemented accordingly.
    });

    Note that grid generation will only work when there's metadata inside a <Parameters> object in the Mapnik XML.

    The key fields are interactivity_layer and interactivity_fields. See an example in the tests. These Parameters are normally added by the application that creates the XML, in this case CartoCSS

    Install

    npm i tilelive-mapnik

    DownloadsWeekly Downloads

    25

    Version

    0.6.18

    License

    none

    Last publish

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