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The Mathematical Modeling of Spatial and Non-Spatial Information in Geographic Information Systems
Geographic Information Systems (GIS) use a variety of approaches to model spatial information and the data processing associated to spatial analysis. Each of these primitive data models has its ownExpand
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Geography Markup Language
A ratchet wrench including two clamping panels, a base seat, a rotary member, an engaging member, a pressing member and a resilient member. The two clamping panels are respectively formed with twoExpand
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TIGRIS: Topological Integrated Geographic Information System
An improved secondary battery or cell of the type having: (A) one or more anodic reaction zones containing a molten alkali metal reactant-anode in electrical contact with an external circuit; (B) oneExpand
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TIGRIS: a data model for an object-oriented geographic information system
Abstract TIGRIS and its descendent MGE/DYNAMO are a radically different approach to GIS from that in more conventional products. They are based on Features and implemented with an Object-OrientedExpand
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The 9-Intersection: Formalism and Its Use for Natural-Language Spatial Predicates (94-1) - eScholarship
This paper is a part of Research Initiative 10, Spatio-Temporal Reasoning in GIS, of the U.S. National Center for Geographic Information and Analysis (NCGIA). This report contains two papers, plusExpand
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Configuration management of a system of interdependent standards
ISO/TC 211, Geographic information/Geomatics develops the ISO 19100 series of geographic information standards in close collaboration with the Open Geospatial Consortium (OGC). Forty-nine ISO 19100Expand
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The OpenGIS Data Model
The OpenGIS Consortium (OGC) develops implementation specifications to promote the interoperability of geographic information applications. This development is based on the concept of a comprehensiveExpand
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