Key Concepts and Techniques in GIS Book

List of Figures     ix
Preface     xi
Creating Digital Data     1
Spatial data     2
Sampling     3
Remote sensing     5
Global positioning systems     7
Digitizing and scanning     8
The attribute component of geographic data     8
Accessing Existing Data     11
Data exchange     11
Conversion     12
Metadata     13
Matching geometries (projection and coordinate systems)     13
Geographic web services     15
Handling Uncertainty     17
Spatial data quality     17
How to handle data quality issues     19
Spatial Search     21
Simple spatial querying     21
Conditional querying     22
The query process     23
Selection     24
Background material: Boolean logic     25
Spatial Relationships     29
Recoding     29
Relationships between measurements     32
Relationships between features     34
Combining Spatial Data     37
Overlay     37
Spatial Boolean logic     40
Buffers     41
Buffering in spatial search     43
Combining operations     43
Thiessen polygons     44
Location-Allocation     45
The best way     45
Gravity model     46
Location modeling     47
Allocation modeling     50
Map Algebra     51
Raster GIS     51
Local functions     53
Focal functions     55
Zonal functions     56
Global functions     57
Map algebra scripts     58
Terrain Modeling     59
Triangulated irregular networks (TINs)     60
Visibility analysis     61
Digital elevation and terrain models     62
Hydrological modeling     63
Spatial Statistics     65
Geo-statistics     65
Inverse distance weighting     65
Global and local polynomials     66
Splines     67
Kriging     69
Spatial analysis     70
Geometric descriptors     70
Spatial patterns     72
The modifiable area unit problem (MAUP)      74
Geographic relationships     75
Geocomputation     77
Fuzzy reasoning     77
Neural networks     79
Genetic algorithms     80
Cellular automata     81
Agent-based modeling systems     82
Epilogue: Four-Dimensional Modeling     85
Glossary     89
References     95
Index     99