Choropleth Map Production by Facsimile
The Cartographic JournalPublished 1 June 1978
Jean-Claude Müller, John L. Honsaker
Citations2
SJR quartileQ3
SJR score0.26
SNIP1.14
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Abstract
A continuous tone image can be produced by facsimile to simulate the various shaded patterns of a choropleth map. The image can be subsequently screened for half-tone reproduction. Up to 255 hues of tone can be reproduced. The facsimile technique removes the need for finding manufactured tones whose visual intensity is closely proportional to the data value, thereby forcing the cartographer to debate the significance of class generalisation.
Keywords
Earth and Planetary SciencesEnvironmental Science
The Cartographic JournalThe Map as a Communication System
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The problem of assessing the amount of information included in a map and the efficiency with which geographical knowledge is evoked in a percipient is reviewed and the techniques of information theory are judged not to be directly applicable.