Exploring geographic information systems

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Wiley, 2002 - Technology & Engineering - 305 pages
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This exploration of geographic information and geographic information systems (GIS) expands the discussion beyond the normal input-processing-output sequence. It begins by examining the manipulations that support analytical uses of GIS, including measurement and frameworks, representations, data quality, transformation and operations, parametric mapping, simple logic and overlay, taxonomy, distance transformations and surfaces. It then moves on to discuss operations that connect the practical exercises in the book to professional applications of GIS techniques in bureaucratic, social and cultural contexts.

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Contents

BASIC BUILDING BLOCKS
1
Convergence of Many Technologies
11
Levels of Measurement
25
Summary
34
Control and Measurement
41
Attribute as Control
44
Spatial Control
53
Composite Frameworks
61
Distance Relationships
153
Extended Voronoi Networks
164
The Spatial Component
179
Combining Neighborhood Attributes
182
Data Quality Applications of Neighborhood Operations
193
A Family of Problems with a Common Approach
211
Transformations
217
A Scheme for Transformations
227

Temporal Frameworks
67
Representation Models and Data Structures
75
Database Architecture
83
Closing the Loop
97
TRANSFORMATIONS AND OPERATIONS
103
Combining Pairs of Input Values
111
Summary
118
Summary
242
THE BROADER ARENA
243
Serving Larger Goals
263
Geographic Information in the Bureaucracy
271
Summary
283
Sources and Credits
293
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About the author (2002)

Nick Chrisman, University of Washington

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