choropleth map


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choropleth map

A map on which areas are colored or shaded according to variables, e.g., where a disease is active and where quiescent.
See also: map
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The design and production of choropleth maps are relatively streamlined because of well-established data-symbolization techniques.
The census tract choropleth map (Figure 5) suffers from having too many small districts and too many districts with either no observations or only one observation.
These relationships connected numerical data to the polygons (village) as a source data for the choropleth maps and the bar diagrams.
The choropleth maps in figures 5-7 show the residuals from the second model specifications and investigate whether regions and specific countries seem to under- or overperform relative to the model expectations.
The analytical results were also visualized through isolines/density buffers and choropleth maps using GIS.
The LISA cluster maps of age-adjusted mortality rates for all causes at the beginning and end of the study period recapitulate the pattern observed in the choropleth maps, but reduce the complexity so that statistically significant clusters can be more easily distinguished.
Choropleth maps illustrate information about an attribute's value by applying the use of colors to polygons, lines, or points.
The creation of choropleth maps, the dominant cartographic form in these atlases, raises several methodological questions.
Choropleth maps which use colour differences to represent numerical quantity pertaining to areas, were created to display district-wise, sex- disaggregated, percentages of both indices by using ArcGIS 10.