Product Description
The WWW presents many new and exciting opportunities for GIS as well as numerous technical, practical and organisational challenges. This book covers the principles, standards and techniques for online GIS.
From the Back Cover
The World Wide Web presents many new and exciting prospects for geographic information systems, but also numerous technical, practical and organizational challenges. Users no longer require specialized and expensive hardware, software, and data, and they can access a GIS readily from almost anywhere, using off-the-shelf browser software. But by far the biggest challenge for online (Internet) GIS is to exploit the Web's inherently distributed environment. An online GIS removes the need to collate all the necessary elements in a single database. Instead it has the potential to combine seamlessly datasets that are stored on many different servers and maintained by many different organizations. However to realize this potential it is crucial to develop appropriate standards and protocols. Such problems belong to the realm of spatial metadata, which forms an important theme in this book. They also overlap with many general problems of cross-site coordination on the Web.
The book covers the principles, techniques and standards for online GIS, including online spatial information and data warehousing. It examines the idea of metadata and outlines why it is important today, especially in the context of online information. It explains the underlying methodologies, including relevant standards, and the tools and skills needed to manage metadata. Finally the subject is placed in the context of global GIS: putting data online; creating metadata; creating virtual data warehouses; geographic agents and spatial data mining. It includes detailed descriptions and demonstrations of crucial processes, such as implementing spatial queries and map-building online.
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