option = { xAxis: { type: 'category', data: ["a", "b","c","d"] }, yAxis: { type: 'value', name: 'km/s minus 299,000', splitArea: { show: true } }, series: { name: 'boxplot', type: 'boxplot', data: [ [1, 2, 4, 5, 7], [1, 2, 4, 5, 7], { name: "c", value: [1,2,3,4,5] }, [1, 2, 4, 5, 7] ] } };