Titlebook: Spatial Information Theory A Theoretical Basis for GIS; International Confer Stephen C. Hirtle,Andrew U. Frank Conference proceedings 1997

arrhythmic

Using hierarchical spatial data structures for hierarchical spatial reasoning,mputation when a result is achieved which is ‘good enough’. This is different from standard hierarchical algorithms, which use hierarchical data structures to improve efficiency in computing the correct result. An algorithm on hierarchical spatial data structure explores all details where such exist

Feedback

Dictation

Fiat and bona fide Boundaries: Towards an ontology of spatially extended objects,der into this typological clutter. The theory of spatially extended objects should make room not only for the objects of physics but also for objects at higher levels, including the objects of geography and of related disciplines. It should leave room for different types of ., including both the . b

占卜者

他日关税重重

Classification as an impediment to the reliable and valid use of spatial information: A disaggregatgeography, problems that are encountered with them, and some reasons for those problems. General theories of categorization from the cognitive sciences and from philosophy are examined and compared to geographic practice. Finally, an alternative approach to the use of classified data in digital spat

progestogen

What maps mean to people: Denotation, connotation, and geographic visualization in land-use debates is generally not possible to represent the diverse connotations people may assign to what is denoted on a map, nor would this be desirable in most map-use contexts. There are however cases, as in conflicts over land use or the management of natural resources, where much of the debate surrounds the

沉默

散步

Complex regions in topological queries,geneous 2-dimensional surfaces, possibly with holes. Previously, compositions of regions and regions with holes were treated separately and in a restrictive scenario, where it is required that the composing regions should be disconnected. We point out that this restriction could lead to an anomaly i

真繁荣

A cognitive assessment of topological spatial relations: Results from an empirical investigation,wledge is more often based on the intuition of the researchers than on empirical data In contrast, the research reported here is concerned with an empirical assessment of one of the three general classes of spatial relations, namely topological knowledge. In the reported empirical investigation, sub

蚀刻

,Voronoï diagrams on line segments: Measurements for contextual generalization purposes,itions of the features relatively one to the other have to be elicited before any generalization operation can be chosen and performed lest the rendering of the geographical meaning be defaced or misleading. The paper shows, through examples, that Voronoï diagrams on the segments constitutive of the