echarts实现获取datazoom的起始值(包括x轴和y轴)

let option = {} //你的echarts图表的配置，这里我就不贴我的了
myChart.setOption(option);
//开始
let startValue = myChart.getModel().option.dataZoom[0].startValue;
let endValue = myChart.getModel().option.dataZoom[0].endValue;
let start = myChart.getModel().option.xAxis[0].data[startValue];//起始X轴
let end = myChart.getModel().option.xAxis[0].data[endValue];//结束X轴
 
let startNum = obj.enddate.indexOf(start);
let endNum = obj.enddate.indexOf(end);
let arr = [];
for(let i = startNum;i <= endNum;i++){
 arr.push(obj.value[i]);
}
let max = Math.max.apply(null, arr);
let min = Math.min.apply(null, arr);
 
let ystartValue = myChart.getModel().option.dataZoom[1].startValue;//y轴datazoom最小值
let yendValue = myChart.getModel().option.dataZoom[1].endValue;//y轴datazoom最大值
let de = yendValue - ystartValue;//总区间数值大小
let minbili = (min-ystartValue)/de100;
let maxbili = (max-ystartValue)/de100;
this.min_max.push([Math.floor(minbili),Math.ceil(maxbili)]);//得到y轴datazoom的起始值
//结束