“The application of the intercolor 8000 terminal to thematic cartography” by Carter and Icove

  • ©James R. Carter and David J. Icove




    The application of the intercolor 8000 terminal to thematic cartography



    The Intercolor 8000 color video terminal is used in conjunction with a timesharing computer system for applications in thematic cartography. The version of the terminal discussed can resolve the screen into a matrix of 25 rows by 80 columns with colored characters on colored backgrounds. Using the plot mode, the screen can be further resolved into single-color cells of 100 rows by 160 columns. The value and limitations of the terminal are discussed in terms of the selection and brightness of the eight colors, the dimensions of the cells and the ability to mix colors in small cells. The possibilities of using the terminal for dot, choropleth and isarithmic maps are explored. Acetate overlays can be used to add base lines such as boundaries and rivers and the composite images can be recorded on standard slide film.


    1. Lancaster, D., “TV Color Graphics”, Byte, vol. 2, no. 6, February 1976, 62-69.Google Scholar
    2. Tobler, W. R., “Choropleth Maps Without Class Intervals?” Geographical Analysis, vol. V, no. 3, July 1973, 262-265.Google ScholarCross Ref
    3. There are many references to map situations using cells. See for example: Coppock, J. T., “Maps by Line Printer” in Davis and McCullagh (eds.), Display and Analysis of Spatial Data. John Wiley and Sons, 1975, 137-154, and Baxter, F. P., T. L. Cox and R. P. Gregory, Land Analysis System, T. V. A. Technical Note No. B9, 1975.Google Scholar
    4. Baxter, et. al., Op. Cit.Google Scholar
    5. Carter, J. R., Gridded Map. T. V. A. Division of Tributary and Area Development, 1975.Google Scholar
    6. Icove, D. J. and H. J. Crisman, “Application of Pattern Recognition in Arson Investigation,” Fire Technology, Feb. 1975, 35-41.Google Scholar
    7. Broome, R. F., “Micrographics: A New Approach to Cartography at the Census Bureau,” ACSM, Proceedings of the Fall Convention, Washington, D. C. 1974, 1-14.Google Scholar
    8. Cuff, D. J., “Perception of Color Sequences on Maps of Atmospheric Pressure”, Professional Geographer, Vol XXVI, No. 2, May 1974, 166-171.Google ScholarCross Ref

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