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minimum map unit

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  1. [map design] For a given scale, the size in map units below which a narrow feature can be reasonably represented by a line and an area by a point.
  2. [photogrammetry] In imagery, the smallest area identified as an object or class in the output dataset, expressed in ground units.
  3. [graphics (map display)] The smallest allowable size for a group of cells to be seen as a single entity in a raster image.

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