This paper presents some experiments with an IBM 1443 line printer that was operated in an open-shop-service by the author. Since the line feed distance was altered and special printer symbols were mounted, consequently choropleth maps could be printed with equidistant grey tones. An application of color will further extend the scope of graphic expression; by placing color copy paper on the printer sheet, color maps may be produced from the computer. For example, several independent variables such as factors may be represented simultaneously, enabling the reader to establish a visual typification of the region in question. As an example of multi-colored display of qualitative characteristics, land use maps may be printed both in standard and special symbols. The special symbols developed may also be employed to print out various models of automated relief shading. Experiments were made not only to adjust the direction of incoming light to local relief forms, but also to represent relief in color. These procedures may also be used to represent non-topological surfaces.

  • Supplemental Notes:
    • Presented at the 34th Annual Meeting, St. Louis, Missouri, March 10-15, 1974.
  • Corporate Authors:

    American Congress on Surveying and Mapping

    Woodward Building, Room 430, 733 15th Street, N W
    Washington, DC  United States  20005
  • Authors:
    • Brassel, K
  • Publication Date: 0

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00261456
  • Record Type: Publication
  • Report/Paper Numbers: #74-385
  • Files: TRIS
  • Created Date: Oct 22 1974 12:00AM