/* ------------------------------------------------------------------------------ * * # D3.js - basic sunbirst diagram * * Demo sunbirst diagram setup with .json data source * * Version: 1.0 * Latest update: August 1, 2015 * * ---------------------------------------------------------------------------- */ $(function () { // Initialize Uniform plugin $('.basic-options input').uniform({ radioClass: 'choice' }); // Initialize chart sunburstBasic('#d3-sunburst-basic', 400, 400); // Chart setup function sunburstBasic(element, width, height) { // Basic setup // ------------------------------ // Define main variables var radius = Math.min(width, height) / 2, color = d3.scale.category20(); // Create chart // ------------------------------ var svg = d3.select(element).append("svg") .attr("width", width) .attr("height", height) .append("g") .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); // Construct chart layout // ------------------------------ // Partition layout var partition = d3.layout.partition() .sort(null) .size([2 * Math.PI, radius * radius]) .value(function(d) { return 1; }); // Arc var arc = d3.svg.arc() .startAngle(function(d) { return d.x; }) .endAngle(function(d) { return d.x + d.dx; }) .innerRadius(function(d) { return Math.sqrt(d.y); }) .outerRadius(function(d) { return Math.sqrt(d.y + d.dy); }); // Load data // ------------------------------ d3.json("assets/demo_data/d3/sunburst/sunburst_basic.json", function(error, root) { // Add sunbirst var path = svg.datum(root).selectAll("path") .data(partition.nodes) .enter() .append("path") .attr("display", function(d) { return d.depth ? null : "none"; }) // hide inner ring .attr("d", arc) .style("stroke", "#fff") .style("fill", function(d) { return color((d.children ? d : d.parent).name); }) .style("fill-rule", "evenodd") .each(stash); // Change data d3.selectAll(".basic-options input").on("change", function change() { var value = this.value === "count" ? function() { return 1; } : function(d) { return d.size; }; // Transition path.data(partition.value(value).nodes) .transition() .duration(750) .attrTween("d", arcTween); }); }); // Stash the old values for transition. function stash(d) { d.x0 = d.x; d.dx0 = d.dx; } // Interpolate the arcs in data space. function arcTween(a) { var i = d3.interpolate({x: a.x0, dx: a.dx0}, a); return function(t) { var b = i(t); a.x0 = b.x; a.dx0 = b.dx; return arc(b); }; } } });