GIS Dictionary

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

Now available for purchase: A to Z GIS: An illustrated dictionary of geographic information systems.

Search the GIS Dictionary:

  Search  

Browse the GIS Dictionary:

GIS Bibliography

Researching GIS?
Search the GIS Bibliography for a vast index of books, journals, conference proceedings and reports.

base height

  1. [aerial photography] In aerial photography, the height or altitude from which a photograph is taken.
  2. [3D analysis] In ArcGIS 3D Analyst, the height at which a surface, raster, or feature is drawn in a scene. Base height for features and rasters can be set from a surface, such as a DEM, or by using a constant value or expression. Features with z-values stored in their geometry can have their base height set using the z-values. Setting the base heights from a surface is also called draping.