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Digitizing

  • By: Shawn Lewers
  • In: Encyclopedia of Geography
  • Edited by: Barney Warf
  • Subject:General Geography, Earth & Environmental Science

Digitizing or digitization is a process that represents an object, image, or document by a discrete set of points, lines, polygons, or raster images. The result is called a digital representation or a digital image of the object represented. In geographic information systems (GIS), digitizing is often the process of converting features on paper or an analog map into digital format. To digitize a map, a GIS practitioner will often use a digitizing tablet (also known as a digitizer) connected to a computer to trace over the features of interest or a scanning device that creates a digital image that is later manipulated in the GIS software.

When using a digitizing tablet, the x, y coordinates of the features are automatically recorded and stored as spatial ...

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