Book Image

OpenLayers 3: Beginner's Guide

By : Thomas Gratier, Paul Spencer, Erik Hazzard
Book Image

OpenLayers 3: Beginner's Guide

By: Thomas Gratier, Paul Spencer, Erik Hazzard

Overview of this book

<p>This book is a practical, hands-on guide that provides you with all the information you need to get started with mapping using the OpenLayers 3 library.</p> <p>The book starts off by showing you how to create a simple map. Through the course of the book, we will review each component needed to make a map in OpenLayers 3, and you will end up with a full-fledged web map application. You will learn the key role of each OpenLayers 3 component in making a map, and important mapping principles such as projections and layers. You will create your own data files and connect to backend servers for mapping. A key part of this book will also be dedicated to building a mapping application for mobile devices and its specific components.</p>
Table of Contents (22 chapters)
OpenLayers 3 Beginner's Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – creating a map


Let's walk through creating a simple map from the beginning. Create a new file in your text editor to get started. To make it easy, save this file in the sandbox folder. Remember that all the samples are set up to use the version of OpenLayers we've provided in the assets folder:

  1. Start with the HTML code needed to set up the page:

    <!doctype html>
    <html>
      <head>
        <title> Map Examples </title>
        <link rel="stylesheet" href="../assets/ol3/ol.css" type="text/css" />
        <link rel="stylesheet" href="../assets/css/samples.css" type="text/css" />
      </head>
      <body>
        <div id="map" class="map"></div>
    <script src="../assets/ol3/ol.js">
    </script>

    We are just setting up a standard HTML 5 web page and including our stylesheets and the OpenLayers library.

  2. Add a <script> block with the following code:

      <script>
        var layer = new ol.layer.Tile({
      source: new ol.source.OSM(...