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  2. Geospatial topology - Wikipedia

    en.wikipedia.org/wiki/Geospatial_topology

    Geospatial topology is the study and application of qualitative spatial relationships between geographic features, or between representations of such features in geographic information, such as in geographic information systems (GIS). [1]

  3. Topology - Wikipedia

    en.wikipedia.org/wiki/Topology

    A three-dimensional model of a figure-eight knot.The figure-eight knot is a prime knot and has an Alexander–Briggs notation of 4 1.. Topology (from the Greek words τόπος, 'place, location', and λόγος, 'study') is the branch of mathematics concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling ...

  4. Topography - Wikipedia

    en.wikipedia.org/wiki/Topography

    A geographic information system (GIS) can recognize and analyze the spatial relationships that exist within digitally stored spatial data. These topological relationships allow complex spatial modelling and analysis to be performed. Topological relationships between geometric entities traditionally include adjacency (what adjoins what ...

  5. Topologically Integrated Geographic Encoding and Referencing

    en.wikipedia.org/wiki/Topologically_Integrated...

    TIGER logo. Topologically Integrated Geographic Encoding and Referencing, or TIGER, or TIGER/Line is a format used by the United States Census Bureau to describe physical and cultural features such as roads, highways, city limits, rivers, and lakes, as well as areas such as census tracts.

  6. Vector overlay - Wikipedia

    en.wikipedia.org/wiki/Vector_overlay

    Vector overlay is an operation (or class of operations) in a geographic information system (GIS) for integrating two or more vector spatial data sets. Terms such as polygon overlay, map overlay, and topological overlay are often used synonymously, although they are not identical in the range of operations they include.

  7. GIS file format - Wikipedia

    en.wikipedia.org/wiki/GIS_file_format

    A GIS file format is a standard for encoding geographical ... 218 A topology rulebase is a list of desired topology rules used to enforce spatial ...

  8. Topological map - Wikipedia

    en.wikipedia.org/wiki/Topological_map

    A map of the New York City Subway, an example of a topological map. An office environment consisting of two rooms connected by a hallway. A topological map is super-imposed.

  9. Data model (GIS) - Wikipedia

    en.wikipedia.org/wiki/Data_model_(GIS)

    Because the world is much more complex than can be represented in a computer, all geospatial data are incomplete approximations of the world. [9] Thus, most geospatial data models encode some form of strategy for collecting a finite sample of an often infinite domain, and a structure to organize the sample in such a way as to enable interpolation of the nature of the unsampled portion.