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Open Access Publications from the University of California

Unit 31 - Efficient Storage of Lines - Chain Codes

  • Author(s): Unit 31, CC in GIS
  • Douglas, David H.
  • Editor(s): Goodchild, Michael F.
  • Kemp, Karen K.
  • et al.

This unit considers how the geometry of lines and areas is coded in a GIS database. Different techniques for coding straight lines, arcs of circles, and splines are presented, and advantages and disadvantages of each are discussed.

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