A demo of TopoJSON on a U.S. counties shapefile from the U.S. census bureau. The same TopoJSON file can also be used to show states.
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="utf-8"> | |
<title>Collapsible Tree Example</title> | |
<style> | |
.node circle { |