I'm experimenting with the example code at: http://jsfiddle.net/7HZcR/3/ I get an error that there is no such function as force. I tried d3.force() and d3.forceSimulation().
I looked for the error message and it seems like this is due to a version change. I don't see in jsFiddle where the script file includes the D3 code, so I don't know what version it's using. Is there a way to determine which version of D3 one should include?
<!DOCTYPE html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Test of http://jsfiddle.net/7HZcR/3/ </title> <style> cut-n-paste of css code </style> <script src="https://d3js.org/d3.v6.min.js"></script> <script> cut-n-paste of js code blah blah var force = d3.layout.force() .nodes(d3.values(nodes)) .links(links) .size([w, h]) .linkDistance(60) .charge(-300) .on("tick", tick) .start(); blah </script> </head> <html> <body> <div id="chart"></div> </body> </html> 
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