Showing papers on "Choropleth map published in 1980"
1 Mar 1980
TL;DR: In this article, a topological cartogram is proposed as a viable alternative to choropleth maps of population characteristics when the population concerned varies greatly in density, and the authors concluded that the topological Cartogram may provide an improvement in graphic communication by avoiding the terrestrial distortion inherent in the Chordopleth method.
Abstract: It is suggested that choropleth maps of population characteristics exhibit serious graphic distortions when the population concerned varies greatly in density. The topological cartogram is proposed as a viable alternative in such situations. The example of an urban cartogram provides a focus for discussion of the strengths and weaknesses of the proposal. It is concluded that the topological cartogram may provide an improvement in graphic communication by avoiding the terrestrial distortion inherent in the choropleth method.
14 citations
1 Jul 1980
TL;DR: A series of maps presenting the spatial distribution of the tabular data from the 1972 County and City Data Book is discussed, providing governmental decision-makers and planners a means to quickly comprehend patterns in the data that are not readily noticeable in the tabularity presentation of the data.
Abstract: A series of maps presenting the spatial distribution of the tabular data from the 1972 County and City Data Book is discussed. Using an automated mapping procedure developed on a minicomputer by two non-computer scientists, 196 choropleth maps of county-level data for the State of Washington were prepared. The maps provide governmental decision-makers and planners a means to quickly comprehend patterns in the data that are not readily noticeable in the tabular presentation of the data.
1 citations