Sticky Dialog Bar | Support | GIS Dictionary

A to Z GIS | Explore this related guide, featuring updated terms and graphics and developed in coordination with Esri’s GIS Dictionary team.

Learn more about A to Z GIS

GIS Dictionary

Browse dictionary

overlay

URL copied Share URL
  1. [spatial analysis] A spatial operation in which two or more maps or layers registered to a common coordinate system are superimposed for the purpose of showing and analyzing the relationships between features that occupy the same geographic space.

  2. [spatial analysis, data conversion] In geoprocessing, the geometric intersection of multiple datasets to combine, erase, modify, update, or analyze features in a new output dataset.

    Media/overlay.gif

See also