Unclassed Choropleth Map

http://go.owu.edu/~jbkrygie/krygier_html/geog_353/geog_353_lo/geog_353_lo07.html


An unclassed choropleth map is characterized by a continuous ramp or color intensity, with no set intervals. This means that every value is a different color, so there may be numerous different shades of a certain color. Unclassed maps can be tricky to interpret if there a too many values, as the colors all begin to blend together and it's hard to differentiate. In this example, a classed map is compared to an unclassed choropleth map. The maps depict population change from 1960-1970, and the map on the left is classed, while the map on the right is not. The unclassed map displays a different color/pattern for each particular value.