Example of a cartodb map.
A simple example with an anonymous cartodb map
import 'ol/ol.css';
import Map from 'ol/Map';
import TileLayer from 'ol/layer/Tile';
import View from 'ol/View';
import {CartoDB, OSM} from 'ol/source';
const mapConfig = {
'layers': [
{
'type': 'cartodb',
'options': {
'cartocss_version': '2.1.1',
'cartocss': '#layer { polygon-fill: #F00; }',
'sql': 'select * from european_countries_e where area > 0',
},
},
],
};
const cartoDBSource = new CartoDB({
account: 'documentation',
config: mapConfig,
});
const 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);
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>CartoDB source example</title>
<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
<script src="https://unpkg.com/elm-pep"></script>
<!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
<script src="https://cdn.polyfill.io/v3/polyfill.min.js?features=fetch,requestAnimationFrame,Element.prototype.classList,URL,TextDecoder,Number.isInteger"></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="main.js"></script>
</body>
</html>
{
"name": "cartodb",
"dependencies": {
"ol": "6.6.1"
},
"devDependencies": {
"parcel": "^2.0.0-beta.1"
},
"scripts": {
"start": "parcel index.html",
"build": "parcel build --public-url . index.html"
}
}