geocodejson-stream

Stream-based utility for consuming and generating GEOJSON files specifically for geocoding needs. see proposed geocodejson spec

install

npm install geocodejson-stream

usage

stringify(geocoding)

geojson feature objects --> geocodejson-stream.stringify(geocoding) --> text

var fs = require('fs');
var geocodejson = require('geocodejson-stream');

// provide geocoding properties as the first parameter to stringify
var geoStream = GeocodeJsonStream.stringify({ version: '0.0.3', license: 'ODbL' });

geoStream.pipe(fs.createWriteStream('results.geojson');

geoStream.write({ type: 'Feature', properties: { name: 'USA' }, geometry: {...} });
geoStream.write({ type: 'Feature', properties: { name: 'Canada' }, geometry: {...} });

geoStream.end();

will result in...

{
  "type": "FeatureCollection",
  "geocoding": {
    "version": "0.0.3",
    "license": "ODbL"
  },
  "features": [
    { "type": "Feature", "properties": { "name": "USA" }, "geometry": {...} },
    { "type": "Feature", "properties": { "name": "Canada" }, "geometry": {...} }
  ]
}

parse

text --> geocodejson-stream.parse --> geojson feature objects

var fs = require('fs');
var through = require('through2');
var geocodejson = require('geocodejson-stream');

fs.createReadStream('results.geojson') // file contents described in stringify documentation
  .pipe(GeocodeJsonStream.parseGeocoding())
  .pipe(through.obj(function (data, enc, next) {
    console.log(data.properties);
    next();
  }));

will result in...

{ "type": "Feature", "properties": { "name": "USA" }, "geometry": {...} },
{ "type": "Feature", "properties": { "name": "Canada" }, "geometry": {...} }

parseGeocoding

text --> geocodejson-stream.parseGeocoding --> geocoding object

var fs = require('fs');
var through = require('through2');
var geocodejson = require('geocodejson-stream');

fs.createReadStream('results.geojson') // file contents described in stringify documentation
  .pipe(GeocodeJsonStream.parseGeocoding())
  .pipe(through.obj(function (data, enc, next) {
    console.log(data);
    next();
  }));

will result in...

{
  "version": "0.0.3",
  "license": "ODbL"
}

test

$ npm test

contribute

• [x] yes please

license

MIT (see LICENSE.md)