GIS Miscellaneous

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Undergrad Geographic Information Systems Flashcards on GIS Miscellaneous , created by georgia.s.couch on 14/03/2014.
georgia.s.couch
Flashcards by georgia.s.couch, updated more than 1 year ago
georgia.s.couch
Created by georgia.s.couch over 11 years ago
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Question Answer
.shp (extension) X and Y coordinate that spatially define a shape.
.shx (extension) Index to find a shape by type.
.dbf (extension) Database file that contains all the attributes to describe the features (DeMers).
Topology The spatial relationships between geographical features.
contiguity property (of topology) How links (roads/rivers) are in relation to polygons.
TIN Triangulated Irregular Network- A model that represents surface.
DEM Digital Elevation Model
Datum 'A single entry in a database' (Davis, 2001)
Data A series of entries in a database.
Dataset A collection of data that belongs together/ related to each other.
Information Information is the meaning/ interpretation of data (Davis)
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