GIS Dictionary

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  1. [Euclidean geometry] In spatial measurements, the quantity per unit area or length.
  2. [physics] In a substance such as a gas, solid, or liquid, a measurement of the ratio of mass to volume.
  3. [spatial analysis] In ArcGIS spatial analysis, a function that distributes the quantity or magnitude of point or line observations over a unit of area to create a continuous rasterfor example, population per square kilometer.

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