To Pie Chart

# transform_pie.js

var chart = c3.generate({ data: { columns: [ ['data1', 30, 200, 100, 400, 150, 250], ['data2', 130, 100, 140, 200, 150, 50] ] } }); setTimeout(function () { chart.transform('pie'); }, 1000); setTimeout(function () { chart.transform('line'); }, 2000); setTimeout(function () { chart.transform('pie'); }, 3000);