A device independent computer plotting system

  • Authors:

  • Uday G. Gujar

  • Affiliations:

  • Computing Centre and School of Computer Science, University of New Brunswick, Fredericton, N.B., Canada

  • Venue:
  • The papers of the ACM symposium on Graphic languages
  • Year:
  • 1976

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Abstract

This paper describes a computer plotting system which is completely device independent. The user can switch from one plotting device to another without any programming changes. The interface for adding new plotting devices is formalized and discussed. The addition of a new plotting device is completely transparent to the user; in fact, the old programs may be used to produce plots on the new device without any programming changes whatsoever. The system was designed and implemented by the author in late 1971 and has been in use ever since (see Ref. 1). Several new plotting devices, real as well as pseudo, have been added successfully without affecting the users of the system.