var chart = c3.generate({
data: {
columns: [
['data1', 30, 200, 100, 400, 150, 250, 50, 100, 250]
]
},
axis: {
x: {
type: 'category',
categories: ['cat1', 'cat2', 'cat3', 'cat4', 'cat5', 'cat6', 'cat7', 'cat8', 'cat9']
}
});