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

OpenLayers' key components


The OpenLayers library provides web developers with components useful to build web mapping applications. Following the principles of an Object-oriented design, these components are called classes. The relationship between all the classes in the OpenLayers library is part of the deliberate design, or architecture, of the library. There are two types of relationships that we, as developers using the library, need to know about: relationships between classes and inheritance between classes. We briefly talked about object-oriented programming in Chapter 1, Getting Started with OpenLayers and a more detailed discussion is included in Appendix A, Object-oriented Programming – Introduction and Concepts but for the purpose of this chapter, let's summarize the two types of relationships we are interested in:

  • Relationships between classes describe how classes, or more specifically, instances of classes, are related to each other. There are several different conceptual ways...