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GIS Dictionary

Definitions for GIS terms related to operations such as analysis, GIS modeling and web-based GIS, cartography, and Esri software.

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node

  1. [ESRI software] In a geodatabase, the point representing the beginning or ending point of an edge, topologically linked to all the edges that meet there.
  2. [ESRI software] In a coverage, the beginning or ending point of an arc, topologically linked to all the arcs that meet there.
  3. [data structures] In a TIN, one of the three corner points of a triangle, topologically linked to all triangles that meet there. Each sample point in a TIN becomes a node in the triangulation that may store elevation z-values and tag values. node Illustration
  4. [mathematics] In graph theory, any vertex in a graph.
  5. [hardware] The point at which a computer, or other addressable device, attaches to a communications network.