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Point-in-polygon
<!doctype html> <meta charset="utf-8"> <html> <head> <style type="text/css"> #canvas { width: 800px; height: 400px; border: 1px solid #666; } path { fill: none; stroke-width: 1px; stroke: #666; } circle { fill: steelblue; } circle.selected { fill: #ff0000; } </style> </head> <body> <div id="canvas"></div> <span id="clear">[clear]</span> <script src="https://d3js.org/d3.v3.min.js"></script> <script type="text/javascript" src="main.js"></script> </body> </html>
Modified
http://d3js.org/d3.v3.min.js
to a secure url
https://d3js.org/d3.v3.min.js