A continuously variable proportional circle map is a type of proportional circle map that displays data using circles to represent data instead of dots. The size of the circle relates to the measured variable and not the area it is covering. There is not a specific amount of circles used, and the size can vary. The circles are divided into pie charts. This allows other information to be displayed. The continuously variable proportional circle map above is from 1858. The map displays the differences in amount and type of meat that was sent to Paris butcheries from different regions of France.
https://www.e-education.psu.edu/geog486/book/export/html/1796
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