fluidmotion

    var tooltip = d3.select("body")
        .append("div")
        .style("position", "absolute")
        .style("z-index", "10")
        .style("visibility", "hidden")
        .style("background", "#FFFF00")
        .text("a simple tooltip");

    var width = 960,
        height = 900,

fluidmotion

    var myList = [];
    var t1 = 0;
    var t2 = 0;
    var t3 = 0;
    var cols = ['Flow', 'BudgetItem', 'Aquifer'];

    $.holdReady( true );
    $.ajax({
      url: 'https://raw.githubusercontent.com/fluidmotion/visTools/master/examples/sunburst/blackhills.json',

fluidmotion

<script src="https://d3js.org/d3.v3.min.js"></script>
<script>

var width = 960,
    height = 900,
    radius = Math.min(width, height) / 3;

var x = d3.scale.linear()
    .range([0, 2 * Math.PI]);