GIS Dictionary

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  1. [cartography] The ratio or relationship between a distance or area on a map and the corresponding distance or area on the ground, commonly expressed as a fraction or ratio. A map scale of 1/100,000 or 1:100,000 means that one unit of measure on the map equals 100,000 of that unit on the earth.
  2. [data quality] In mathematical or double precision, the number of digits to the right of a decimal point in a number. For example, the number 567.89 has a scale of 2.

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