Book Image

Building Web and Mobile ArcGIS Server Applications with JavaScript ??? Second Edition - Second Edition

By : Eric Pimpler, Mark Lewin
Book Image

Building Web and Mobile ArcGIS Server Applications with JavaScript ??? Second Edition - Second Edition

By: Eric Pimpler, Mark Lewin

Overview of this book

The ArcGIS API for JavaScript enables you to quickly build web and mobile mapping applications that include sophisticated GIS capabilities, yet are easy and intuitive for the user. Aimed at both new and experienced web developers, this practical guide gives you everything you need to get started with the API. After a brief introduction to HTML/CSS/JavaScript, you'll embed maps in a web page, add the tiled, dynamic, and streaming data layers that your users will interact with, and mark up the map with graphics. You will learn how to quickly incorporate a broad range of useful user interface elements and GIS functionality to your application with minimal effort using prebuilt widgets. As the book progresses, you will discover and use the task framework to query layers with spatial and attribute criteria, search for and identify features on the map, geocode addresses, perform network analysis and routing, and add custom geoprocessing operations. Along the way, we cover exciting new features such as the client-side geometry engine, learn how to integrate content from ArcGIS.com, and use your new skills to build mobile web mapping applications. We conclude with a look at version 4 of the ArcGIS API for JavaScript (which is being developed in parallel with version 3.x) and what it means for you as a developer.
Table of Contents (21 chapters)
Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Chapter 8. Turning Addresses into Points and Points into Addresses

One feature that is often required in web mapping applications is the ability to search for a street address or place name and have that turned into geographic coordinates that can be highlighted on the map, or manipulated in some other way. This process of turning addresses into points is called geocoding. Sometimes, users want to be able to click a map location and have your application tell them which physical address that location relates to. This is known as reverse geocoding.

Geocoding is accomplished in ArcGIS Server through the use of locator services which are consumed in the ArcGIS Server JavaScript API through the Locator class. As with the other tasks provided by ArcGIS Server, geocoding requires various input parameters, including an Address object for address matching or a Point object in the case of reverse geocoding. This information is then submitted to the locator service. If there is a match, the service...