Figure 1
From: Choropleth map legend design for visualizing community health disparities
A choropleth map depicting the percent of low birthweight with alternative legend designs. An equal interval classification is used to portray the spatial distribution of the percent of low birthweight births by town in Connecticut. The bottom-left diagram is a standard legend connecting the colors in the map to the range of data they represent. The bottom-right diagram is a cumulative frequency legend that also depicts the cumulative percentage of towns associated with each data interval on the map.