tilelive

tilelive.js

tilelive.js is a tile server for node.js which supports on-the-fly configuration and advanced interaction output. It's powered by Mapnik and can be used to add a tile server to an existing web application or wrapped with a light standalone web tile server.

Examples

See examples/server.js for an example tile server that leverages Express as its web framework.

Requirements

• node-mapnik
• underscore
• mess.js
• node-pool
• node-get

Usage

var express = require('express'),
    Tile = require('tilelive').Tile,
    app = express.createServer();

app.get('/:scheme/:mapfile_64/:z/:x/:y.*', function(req, res) {
    /*
     * scheme: (xyz|tms|tile (tms))
     *
     * format:
     * - Tile: (png|jpg)
     * - Data Tile: (geojson)
     * - Grid Tile: (*.grid.json)
     */
    try {
        var tile = new Tile({
            scheme: req.params.scheme,
            mapfile: req.params.mapfile_64,
            xyz: [
                req.params.x,
                req.params.z,
                req.params.y],
            format: req.params[0],
            mapfile_dir: '/tmp/mapfiles'
        });
    } catch (err) {
        res.send('Tile invalid: ' + err.message);
    }

    tile.render(function(err, data) {
        if (!err) {
            res.send.apply(res, data);
        } else {
            res.send('Tile rendering error: ' + err);
        }
    });
});