TAILIEUCHUNG - GIS for Web Developers Adding Where to Your Web Applications

There is a hidden revolution going on: geography is moving from niche to the mainstream. GIS for Web Developers introduces Geographic Information Systems (GIS) in simple terms and demonstrates hands-on uses. With this book, you'll explore popular websites like , see the technologies they use, and learn how to create your own. Written with the usual Pragmatic Bookshelf humor and real-world experience, GIS for Web Developers makes geographic programming concepts accessible to the common developer. | G1S for Web Developers Adding Where to Your Web Applications Scott Davis The Pragmatic Bookshelf Raleigh North Carolina Dallas Texas Pragmatic _ nookshelf Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book and The Pragmatic Programmers LLC was aware of a trademark claim the designations have been printed in initial capital letters or in all capitals. The Pragmatic Starter Kit The Pragmatic Programmer Pragmatic Programming Pragmatic Bookshelf and the linking g device are trademarks of The Pragmatic Programmers LLC. Every precaution was taken in the preparation of this book. However the publisher assumes no responsibility for errors or omissions or for damages that may result from the use of information including program listings contained herein. Our Pragmatic courses workshops and other products can help you and your team create better software and have more fun. For more information as well as the latest Pragmatic titles please visit us at http Copyright 2007 The Pragmatic Programmers LLC. All rights reserved. No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior consent of the publisher. ISBN-10 0-9745140-9-8 ISBN-13 978-0-9745140-9-3 __Contents Preface 10 Acknowledgments. 11 1 Introduction 13 Demystifying GIS. 13 Finding Free Data Sources and Applications. 14 Becoming a GIS Programmer. 16 What Are You Getting Yourself Into . 16 2 Vectors 19 Raw Materials. 19 Raster Data. 20 Vector Data . 24 Types of Vector Data. 24 What Data Is Available . 29 Know Your File Formats . 31 Anatomy of a Shapefile. 32 The Downloadable States of America. 32 .

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