设置图标x与y距离

 grid: { // 控制图的大小，调整下面这些值就可以，
   x: 40,
   x2: 100,
   y2: 150// y2可以控制 X轴跟Zoom控件之间的间隔，避免以为倾斜后造成 label重叠到zoom上
 },

设置高亮点

series: [
    {
    markPoint: {
       itemStyle: {
         normal: {
           label: {
             textStyle: {
               color: '#fff',
                 fontSize: '10px'
             }
           }
         }
       },
      symbolSize: [50, 20],
      symbolOffset: [0, '-70%'],
      symbol:
      'image://data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAoCAMAAAA/pq9xAAAAAXNSR0IArs4c6QAAAFRQTFRFAAAA/wAA/2Yz/20k/1U5/2I7/2Yz/2U2/2M5/2M2/2Q3/2Y2/2Q2/2Q1/2Q3/2Q2/2Q2/2U2/2U2/2U2/2Q2/2Q2/2Q1/2Q2/2Q2/2Q2/2Q1/2Q2vo+uEgAAABt0Uk5TAAEFBwkNGSY2UGZsen2ZoLW+wNrc4e/y9/z92+uRuQAAAM9JREFUSMfdl9sOgjAQRAcoUC4tt5bb/v9/+qBoND6YyGyM5wM42ZR2Z4B/xLo+LLt8zb6E3tl3BtNMcipTY14dVZTTidWTIvNCwWcPRz4IiSG/z0FziAzHLF6I+NuZC5UKAEzkSqIB0AiZBsDElkyAFToWji9x6PmSHoEvCVj4kgUbX7LpTKJyJip/l8o9UbnxKm+Xziussk9UNqPOjtdJKyq5SydB6mRhpVSv008+IG3X4ztrm9K6WDleHWPJbHxJPYvMdUIulkXXFT/ZeC8MAkWG5BKq1QAAAABJRU5ErkJggg==',
      data: [
        {
          value: '你在这里',
          xAxis: 33,
          yAxis: that.index
        }
      ]
     }  
  }
]

默认选中

myChart.dispatchAction({
  type: 'highlight',
  dataIndex: 0
});

背景网格线

splitLine: {
  lineStyle: {
    color: '#eee'
  }
}