Definition of choropleth map in English:
A map which uses differences in shading, colouring, or the placing of symbols within predefined areas to indicate the average values of a particular quantity in those areas. Compare with isopleth.
- They also compared a choropleth map showing the number of people living in each state with one showing population density.
- Care is needed in the interpretation of all maps, and choropleth maps are no exception.
- On a choropleth map, cartographic convention assigns the darkest color to the highest value.
1930s: choropleth from Greek khōra 'region' + plēthos 'multitude'.
Definition of choropleth map in:
- US English dictionary
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