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queryMany
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| 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'); | |
| }); |
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| { | |
| "name": "querytest", | |
| "dependencies": { | |
| "mapnik": "https://github.com/mapnik/node-mapnik/archive/queryMany.tar.gz" | |
| } | |
| } |
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Or 356.3ms per call to queryMany (for 300pts)