Additional Y Axis

# axes_y2.js

var chart = c3.generate({ data: { columns: [ ['data1', 30, 200, 100, 400, 150, 250], ['data2', 50, 20, 10, 40, 15, 25] ], axes: { data1: 'y', data2: 'y2' } }, axis: { y2: { show: true } } });