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choropleth map
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choropleth map

Map on which the average numerical value of some aspect of an area (for example, unemployment by county) is indicated by a scale of colours or isoline shadings. An increase in average value is normally shown by a darker or more intense colour or shading. Choropleth maps are visually impressive but may mislead by suggesting sudden changes between areas.



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Yet the risk of such a presentation is that spatial aggregations of data can also hide social or fine-scale differences, and they can also degenerate into a plodding presentation of choropleth maps that put colour into provincial statistics without telling much of a story.
Atlas of Thailand: Spatial Structures and Development by Hirsch, Philip / Journal of Contemporary Asia
The results of the analysis will be entered into a Geographic Information System (GIS) to produce choropleth maps depicting any significant variation in the ATR over time based on the values of the correlation coefficients for each of the nine regions.
Annual temperature range time-series trends and long-range forecasting by Snow, Mary M. / National Weather Digest
Comparison of methods for classifying epidemiological data on choropleth maps in series.
Spatial epidemiology: current approaches and future challenges by Wartenberg, Daniel / Environmental Health Perspectives
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