Range graded proportional circle map

Virtually the same as a continuously variable proportional circle map, these maps use a different that involves a specific range to define standard size circles rather than the continuously variable set-up. There will only be a set number of circle sizes rather than the infinate set available with continously variable.





Found - http://images.google.com/imgres?imgurl=http://www.santos.com/library/west_natuna.gif&imgrefurl=http://oilismastery.blogspot.com/2008/09/myth-of-subduction.html&usg=__qRCqcNl-jjm6579msVwvomfh_s0=&h=640&w=482&sz=11&hl=en&start=42&um=1&tbnid=1YUAP3nnqn0HIM:&tbnh=137&tbnw=103&prev=/images%3Fq%3Dnoa%2Brelocated%2Bmap%26start%3D40%26ndsp%3D20%26um%3D1%26hl%3Den%26sa%3DN