queryMany

14.2619.6333.vector.pbf

index.js

var fs = require('fs');
var zlib = require('zlib');
var mapnik = require('mapnik');
var z = 14;
var x = 2619;
var y = 6333;
var lon = -122.44210;
var lat = 37.76411;

zlib.inflate(fs.readFileSync(__dirname + '/14.2619.6333.vector.pbf'), function(err, buffer) {
    if (err) throw err;
    var vt = new mapnik.VectorTile(z, x, y);
    vt.setData(buffer);
    vt.parse();
    var query = [];
    for (var i = 0; i < 300; i++) query.push([
        lon + (Math.random()*0.01),
        lat + (Math.random()*0.01)
    ]);
    console.time('10x queryMany for 300 points');
    for (var times = 0; times < 10; times++) {
        var features = vt.queryMany(query, {layer:'contour', tolerance:100000});
    }
    console.timeEnd('10x queryMany for 300 points');
});

package.json

{
    "name": "querytest",
    "dependencies": {
        "mapnik": "https://github.com/mapnik/node-mapnik/archive/queryMany.tar.gz"
    }
}

10x queryMany for 300 points: 3563ms

Or 356.3ms per call to queryMany (for 300pts)