Home >> Cartography and Geographic Information Science, Volume 11, Number 1

Computer-produced Unclassed Bivariate Choropleth Maps

Authors: Lavin, Stephen; Archer, Clark J.

Source: Cartography and Geographic Information Science, Volume 11, Number 1, April 1984 , pp. 49-57(9)

Publisher: Cartography and Geographic Information Society

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Abstract:

Many cartographers subscribe to the view that unclassed choropleth maps and multivariate choropleth maps exceed map readers' abilities to process visual information. This paper examines recent evidence which controverts both of these beliefs and discusses applications of a computer program, BICHOR, designed to produce unclassed bivariate choropleth maps interactively on a line plotter or CRT. The maps utilize crossed-line symbolism and putatively overcome both the quantization error inherent in conventionally classed choroplethic displays and the perceptual difficulties associated with color-encoding schemes used for earlier bivariate maps.

Keywords: UNCLASSED BIVARIATE MAPS; CHOROPLETH MAPS; COMPUTER MAPPING; MAP COMPARISON

Document Type: Research article

DOI: http://dx.doi.org/10.1559/152304084783914885

Publication date: 1984-04-01

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  • Cartography and Geographic Information Science (CaGIS) is the official publication of the Cartography and Geographic Information Society. CaGIS supports research, education, and practices that improve the understanding, creation, analysis, and use of maps and geographic information. The society serves as a forum for the exchange of original concepts, techniques, approaches, and experiences by those who design, implement, and use geospatial technologies through the publication of authoritative articles and international papers. The role of the CaGIS journal is to facilitate these objectives by disseminating results and reports in these areas of interest.

    Cartography and Geographic Information Science (CaGIS) is now being published by Taylor & Francis as of 2013. Please visit the Journal's website at www.tandfonline.com/tcag or contact subscriptions@tandf.co.uk to subscribe and obtain online access.

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