Funnel Charts are used to represent multiple stages in a process and are widely used in visualizing sales process. Given example shows simple Funnel Chart along with source code that you can edit in-browser or save to run it locally.
window.onload = function () {
var options = {
animationEnabled: true,
theme: "light2", //"light1", "light2", "dark1", "dark2"
title: {
text: "Sales Analysis - March 2017"
},
data: [{
type: "funnel",
toolTipContent: "{label}: {y} ({percentage}%)",
indexLabel: "{label} ({percentage}%)",
dataPoints: [
{ y: 1800, label: "Leads" },
{ y: 1552, label: "Initial Communication" },
{ y: 1320, label: "Customer Evaluation" },
{ y: 885, label: "Negotiation" },
{ y: 678, label: "Order Received" },
{ y: 617, label: "Payment" }
]
}]
};
calculatePercentage();
$("#chartContainer").CanvasJSChart(options);
function calculatePercentage() {
var dataPoint = options.data[0].dataPoints;
var total = dataPoint[0].y;
for (var i = 0; i < dataPoint.length; i++) {
if (i == 0) {
options.data[0].dataPoints[i].percentage = 100;
} else {
options.data[0].dataPoints[i].percentage = ((dataPoint[i].y / total) * 100).toFixed(2);
}
}
}
}
Index / Data Labels can be placed inside the funnel section by using the indexLabelPlacement property. Other common customizations include valueRepresents, color, fillOpacity, neckHeight, neckWidth etc.