Geographic Objects with Indeterminate BoundariesCurrent geographical information systems GIS deal almost exclusively with well-defined, static geographical objects ranging from physical landscapes to towns and transport systems. Such objects, exactly located in space, can easily be handled by modern GIS, yet form only a small proportion of all the possible geographical objects.; This book challenges the assumption that the world is compsed of exactly defined and bounded geographic objects such as land parcels, rivers and countries. ignoring the essential complexity of the world, current GIS do not adequately address problems as diverse as the resolution of crime between national boundaries, or the interpretation of views of people from different cultures. This work, bringing together a range of specialists from fields such as linguistics, computer science, land surveying, cartography and soil science, examines current research into the challenges of dealing with geographical phenomena that cannot easily be forced into one of the two current standard data models. |
Contents
Natural Objects with Indeterminate Boundaries | 3 |
On the Relations between Spatial Concepts and Geographic | 8 |
The Prevalence of Objects with Sharp Boundaries in GIS | 29 |
Towards an Operational Typology of Geographic Entities with | 45 |
Boolean and Fuzzy Regions | 87 |
Qualitative Shape Representation | 123 |
Modelling Spatial Objects with Undetermined Boundaries using | 141 |
PART FOUR Qualitative Topological Relations and Indeterminate | 153 |
A Syntactic Approach for Handling the Semantics of Fuzzy Spatial | 207 |
First Specifications | 225 |
On Layerbased Systems for Undetermined Boundaries | 237 |
Hierarchical Models for the Definition and Extraction of Terrain | 257 |
Practical Issues of Dealing with Objects with Indeterminate | 271 |
Defining Landscape | 287 |
From Continuous Fields to Entities | 313 |
Practical Consequences of Distinguishing Crisp Geographic | 335 |
The EggYolk Representation of Regions with Indeterminate | 171 |
PART FIVE Data Models for Indeterminate Objects and Fields | 189 |
Other editions - View all
Geographic Objects with Indeterminate Boundaries Peter A. Burrough,A. Frank No preview available - 2020 |
Geographic Objects with Indeterminate Boundaries Peter A. Burrough,A. Frank No preview available - 1996 |
Common terms and phrases
abstraction analysis application approach artifacts attribute values broad boundary Burrough Campari category theory chapter classification cognitive complete crispings complex concepts conceptual model configuration configuration space context continuous field Couclelis data models data structures data types database defined definition described dimensions discrete Egenhofer Euclidean geometry example FBGIS Figure formal Frank fuzzy set theory fuzzy sets geographic entities geographic objects Geographic Space Geographical Information Systems geometric geostatistics indeterminacy intersection lakes land cover large-scale space layer logic mathematical membership function methods object-oriented observation pixel planar graph points polygon problem properties qualitative raster relational algebra relationships representation represented Science semantic shape sharp boundaries soil boundary spatial data spatial objects spatial reasoning specific subset surface temporal terrain thematic theory tion topological relations towns uncertainty undetermined boundaries urban space vague regions vector viewshed Wadden Sea zone