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choropleth

   Also found in: Dictionary/thesaurus, Wikipedia 0.03 sec.
choropleth [′klȯr·ə‚pleth]
(mapping)
A map showing the distribution of a phenomenon, usually using various colors; color gradations are correlated to the density per unit area of the phenomenon.


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For spatial analysis, the obvious option is to present data on maps, with the variable of interest divided into classes or categories, and plotted using colors or hachure within each geographic unit, known as a choropleth map (Marshall, 1991).
The microplot map (NCI 2004c) shows 95% confidence intervals for the units, and their intervals may overlap even though a choropleth map indicates a difference.
2a software (ESRI, Redlands, CA) to create dot density and choropleth maps.
 
 
 
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