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CartoDB source example

Example of a cartodb map.

A simple example with an anonymous cartodb map

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index.html<!DOCTYPE html>
<html lang="en">
  <head>
    <title>CartoDB source example</title>
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
    <style>
      .map {
        width: 100%;
        height:400px;
      }
    </style>
  </head>
  <body>
    <div class="row-fluid">
      <div class="span12">
        <div id="map" class="map"></div>
        <div>
        <form class="form-horizontal">
          <label>
            Show countries larger than
            <select id="country-area" class="form-control">
              <option value="0" default>0 ㎢</option>
              <option value="5000">5000 ㎢</option>
              <option value="10000">10000 ㎢</option>
              <option value="50000">50000 ㎢</option>
              <option value="100000">100000 ㎢</option>
            </select>
          </label>
        </form>
      </div>
    </div>
    <script src="index.js"></script>
  </body>
</html>
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index.jsimport 'ol/ol.css';
import Map from 'ol/Map';
import View from 'ol/View';
import TileLayer from 'ol/layer/Tile';
import {CartoDB, OSM} from 'ol/source';

var mapConfig = {
  'layers': [{
    'type': 'cartodb',
    'options': {
      'cartocss_version': '2.1.1',
      'cartocss': '#layer { polygon-fill: #F00; }',
      'sql': 'select * from european_countries_e where area > 0'
    }
  }]
};

var cartoDBSource = new CartoDB({
  account: 'documentation',
  config: mapConfig
});

var map = new Map({
  layers: [
    new TileLayer({
      source: new OSM()
    }),
    new TileLayer({
      source: cartoDBSource
    })
  ],
  target: 'map',
  view: new View({
    center: [0, 0],
    zoom: 2
  })
});

function setArea(n) {
  mapConfig.layers[0].options.sql =
      'select * from european_countries_e where area > ' + n;
  cartoDBSource.setConfig(mapConfig);
}


document.getElementById('country-area').addEventListener('change', function() {
  setArea(this.value);
});
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package.json{
  "name": "cartodb",
  "dependencies": {
    "ol": "6.1.1"
  },
  "devDependencies": {
    "parcel": "1.11.0"
  },
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --experimental-scope-hoisting --public-url . index.html"
  }
}