I'm trying to recreate the 3D pie chart in this example: http://bl.ocks.org/NPashaP/9994181
Here's my version: http://jsfiddle.net/26v6cc8x/1/
var salesData=[
{label:"Basic", color:"#3366CC"},
{label:"Plus", color:"#DC3912"},
{label:"Lite", color:"#FF9900"},
{label:"Elite", color:"#109618"},
{label:"Delux", color:"#990099"}
];
var svg = d3.select("body").append("svg").attr("width",700).attr("height",400);
svg.append("g").attr("id","quotesDonut");
Donut3D.draw("quotesDonut", randomData(), 450, 150, 250, 150, 50, 0);
function changeData(){
Donut3D.transition("quotesDonut", randomData(), 250, 150, 50, 0);
}
function randomData(){
return salesData.map(function(d){
return {label:d.label, value:1000*Math.random(), color:d.color};});
}
$(".btn-change").click(function(){
changeData();
});
My question is, how do I add the actual data labels (not the calculated percentages) outside the pie and make sure they keep their correct position after transition? Meaning I want both percentages and labels to show up.
Any help is greatly appreciated. Thanks!
In the Donut3D.js change the following function:
function getPercent(d){
return (d.endAngle-d.startAngle > 0.2 ?
Math.round(1000*(d.endAngle-d.startAngle) / (Math.PI * 2)) /10 + '%' : '');
}
To this:
function getPercent(d) {
return (d.endAngle - d.startAngle > 0.2 ?
d.data.label + ': ' + Math.round(1000 * (d.endAngle - d.startAngle) / (Math.PI * 2)) / 10 + '%' : '');}
This will prefix the label to the percentage value that shows in the graph.
Hope this helps!
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