Quick start guide

Build dependencies

The following software is required to build geojs from source:

In addition, the following python modules are recommended for development and testing of geojs.

Getting the source code

Get the latest geojs source code from our GitHub repository by issue this command in your terminal.

git clone https://github.com/OpenGeoscience/geojs.git

This will put all of the source code in a new directory called geojs. The GeoJS library is packaged together with another library vgl. Formally, this library was included as a git submodule. Currently, vgl is downloaded from npm to integrate better with workflows used by web projects.

Building the source

Inside the new geojs directory, you can simply run the following commands to install all dependent javascript libraries and bundle together everything that is needed.

npm install
npm run build

Compiled javascript libraries will be named geo.min.js and geo.ext.min.js in dist/built. The first file contains geojs and vgl bundled together with a number of dependent libraries. The second file contains d3. The bundled libraries are minified, but source maps are provided

Using the library

The following html gives an example of including all of the necessary files and creating a basic full map using the osmLayer class.

    <script charset="UTF-8" src="/built/geo.ext.min.js"></script>
    <script src="/built/geo.min.js"></script>

        html, body, #map {
            margin: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;

    $(function () {
        geo.map({'node': '#map'}).createLayer('osm');
    <div id="map"></div>

You can save this page into a new file at dist/mymap.html. To view your new creation, start up a web server with the command

npm run examples

Now, if you open up http://localhost:8082/mymap.html in your favorite webgl enabled browser, you should see a map like the following:


Additionally, you will be able to see all of the built-in examples at http://localhost:8082/examples with the example server running.