option = { legend: {}, tooltip: {}, dataset: { dimensions: ['product', '2015', '2016', '2017','2018'], source: [ { product: 'Matcha Latte', '2015': 43.3, '2016': 85.8, '2017': 93.7,'2018': 72.4, }, { product: 'Milk Tea', '2015': 83.1, '2016': 73.4, '2017': 55.1,'2018': 72.4, }, { product: 'Cheese Cocoa', '2015': 86.4, '2016': 65.2, '2017': 82.5,'2018': 72.4, }, ] }, xAxis: [ { type: 'category', gridIndex: 0 }, { type: 'category', gridIndex: 1 } ], yAxis: [{ gridIndex: 0 }, { gridIndex: 1 }], grid: [{ bottom: '55%' }, { top: '55%' }], series: [ // These series are in the first grid. { type: 'bar', }, { type: 'bar', }, { type: 'bar', }, { type: 'bar', xAxisIndex: 1, yAxisIndex: 1,}, ] };