GIS CHPT 3

 Arc A line connected to two end points. Area A spatial feature that is represented by a series of lines and has the geometric properties of size and perimeter. Also called polygon, face, or zone. Area definition A topological relationship used in ESRI's coverage model, which stipulates that an area is defined by a series of connected arcs. Connectivity A topological relationship used in ESRI's coverage model, which stipulates that arcs connect to each other at nodes. Contiguity A topological vector data format used in ESRI products. Coverage A topological vector data format used in ESRI products. Delaunay triangulation A iterative process of connecting points with their two nearest neighbors to form triangles as equiangular as possible in a triangulated irregular network (TIN). Event An attribute that can be associated and displayed with a route. Georelational data model A GIS data model that stores spatial data and attribute data in two separate but related file systems. Graph theory A subfield of mathematics that uses diagrams or graphs to study the arrangements of objects and the relationships between objects. Line A spatial feature that is represented by a series of points and has the geometric properities of location and length. Also called arc, edge, link, or chain. Node The beginning or end point of a line. Point A spatial feature that is represented by a pair of coordinates and has only the geometric property of location. Also called node or vertex. Route A linear feature that allows linear measures to be used on a projected coordinate system. Section A part of a route that refers directly to the underlying arcs and positions along arcs. Shapefile A nontopological vector data format used in ESRI products. Topology A subfield of mathematics that studies properties of geometric objects, which remain invariant under certain transformations such as bending or stretching. Triangulated irregualar network (TIN) A vector data model that approximates the terrain with a set of nonoverlapping triangles. Vector data model A data model that uses points and their x, y-coordinates to construct spatial features. Authorjess3c ID15980 Card SetGIS CHPT 3 DescriptionVocabulary Updated2010-04-24T20:56:51Z Show Answers