Combination Chart

# chart_combination.js

var chart = c3.generate({ data: { columns: [ ['data1', 30, 20, 50, 40, 60, 50], ['data2', 200, 130, 90, 240, 130, 220], ['data3', 300, 200, 160, 400, 250, 250], ['data4', 200, 130, 90, 240, 130, 220], ['data5', 130, 120, 150, 140, 160, 150], ['data6', 90, 70, 20, 50, 60, 120], ], type: 'bar', types: { data3: 'spline', data4: 'line', data6: 'area', }, groups: [ ['data1','data2'] ] } });