平行x轴的直线echarts

markline下面的属性data : [[{name: '标线1起点', value: 100, x: 50, y: 20},{name: '标线1终点', x: 150, y: 120}],[{name: '标线2起点', value: 200, x: 30, y: 80},{name: '标线2终点', x: 270, y: 190}],]