Results 131 to 140 of about 8,097 (178)

Unclassed Animated Choropleth Maps

The Cartographic Journal, 2007
Abstract The potential of unclassed animated choropleth maps as a solution to false patterns of geographic change arising from data classification is investigated. Old concerns about unclassed choropleth maps may be mitigated through map interactivity that offers four advantages over traditional data legends, and previous insights from testing static ...
openaire   +1 more source

Computer-produced Unclassed Bivariate Choropleth Maps

The American Cartographer, 1984
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 ...
Stephen Lavin, Clark J. Archer
openaire   +1 more source

ASSOCIATIONS IN CHOROPLETH MAP COMPARISON

Annals of the Association of American Geographers, 1975
ABSTRACT The associations that may be discovered by map comparison are influenced by the nature of the map features being compared and by the criteria used for making the comparisons. The criteria of identity were used to compare the looks and patterns of choropleth maps.
openaire   +1 more source

Mapping Mortality: Evaluating Color Schemes for Choropleth Maps

Annals of the Association of American Geographers, 1997
Use of color for representing health data on maps raises many unanswered questions. This research addresses questions about which colors allow accurate map reading and which colors map users prefer. Through the combination of a review of previous color research and an experiment designed to test specific combinations of colors on maps, criteria were ...
Cynthia A. Brewer, Alan M. MacEachren, Linda W. Pickle, Douglas Herrmann   +3 more
openaire   +1 more source

Ogive-based Legends for Choropleth Mapping

Cartography and Geographic Information Science, 2006
Exploratory data analysis and geovisualization have opened new paths for displaying and analyzing data. Alternate views of the same data set provide more insight into the nature of the data. The choropleth map has been the primary display device for portraying the spatial distribution of statistical data aggregated over areal units.
Robert G. Cromley, Yanlin Ye
openaire   +1 more source

Students as Map Makers: Creating Choropleth Maps

Journal of Geography, 1996
Abstract Choropleth maps are a common type of thematic map that is easy to make once students learn a few basic definitions and procedures. After making practice maps with data provided by the teacher, students can make a map with data they have gathered.
openaire   +1 more source

Computerised choropleth mapping of Australian resources data

Cartography, 1984
This note describes a continental-scale geographic information system being developed by the CSIRO Division of Water and Land Resources, Canberra to study the use of major land-based resources. The systems mapping units and capabilities are described and broad areas of data capture indicated.
P. A. Walker, K. D. Cocks
openaire   +1 more source

EXPLOREMAP: An Exploration System for Choropleth Maps

Annals of the Association of American Geographers, 1992
Abstract Software for interactive choropleth mapping typically focuses on design, with the assumption that the resulting map will be used like a traditional paper one. We believe that interactive graphics also should enable users to explore the database underlying a map.
Stephen L. Egbert, Terry A. Slocum
openaire   +1 more source

VISUAL AND STATISTICAL COMPARISON OF CHOROPLETH MAPS

Annals of the Association of American Geographers, 1977
ABSTRACT It may be possible to make the visual similarity of a set of maps conform to the statistical intercorrelations among the variables used to produce the maps. Conceptualizing the intercorrelations as the signal and blackness differences as noise, three sets of maps were produced allowing blackness differences to vary for the first and second'set
ROBERT LLOYD, THEODORE STEINKE
openaire   +1 more source

Unclassed Choropleth Maps Revisited/Some Guidelines For The Construction Of Unclassed And Classed Choropleth Maps

Cartographica, 1994
The debate over the value of unclassed versus classed choropleth maps is revisited and updated in light of new research which confirms the communicative effectiveness of unclassed maps. A resolution-independent algorithm for continuous tone unclassed maps is introduced and some guidelines are suggested for the appropriate use of both classsed and ...
openaire   +1 more source