D3.js can't load json file
You should change line
var data = d3.json("2013 Inf-2.json", function(error, root) {to
var data = d3.json("2013 Inf-2.json", function(error, data) {So you just have to replace "root" with "data"
You should change line
var data = d3.json("2013 Inf-2.json", function(error, root) {to
var data = d3.json("2013 Inf-2.json", function(error, data) {So you just have to replace "root" with "data"