express server bounding boxes

README.md

how to set up a quick server that gives you geojson based on a bounding box, your going to need to remember to install express and rtree with

npm install rtree express

server.js

var express = require('express');
var rtree = require('rtree');
var yourData = require("./path/to/geoJson.json");
var app = express();
app.use(express.compress());
var yourIndex = rtree();
yourIndex.geoJSON(yourData);
app.get('/path', function(req, res){
  var bbox,bboxParam;
  if(req.query.bbox){
		bbox = req.query.bbox.split(",");
		bboxParam = [[parseFloat(bbox[0],10),parseFloat(bbox[1],10)],[parseFloat(bbox[2],10),parseFloat(bbox[3],10)]]
		yourIndex.bbox(bboxParam, function(err,result){
			res.jsonp({"type":"FeatureCollection","features":result});
    });
	}else{
		res.jsonp(yourData);
	}
});
app.listen(3000);