var bins = ecStat.histogram(girth);var min = Infinity;var max = -Infinity;edata = echarts.util.map(bins.data, function (item, index) { var x0 = bins.bins[index].x0; var x1 = bins.bins[index].x1; interval = x1 - x0; min = Math.min(min, x0);　　　　max = Math.max(max, x1);　　return [x0, x1, item[1]];});

<div id="main1" style="width: 1000px;height: 500px"></div><script type="text/javascript"> $(function(){  generateChart(); }); function generateChart(){  var myChart1 = echarts.init(document.getElementById('main1'));  var girth = [19, 26.4, 34, 41.4, 42.4, 42.7, 42.9, 43.1, 43.2, 43.3, 43.3, 43.3, 44.9, 45.4, 46.2, 46.7, 48, 48, 49.1, 54.2];  //自定義拼裝數據方式　　　　 var edata = new Array();  var scopeMin = 0;  var scopeMax = 100;  var interval = (scopeMax-scopeMin)/10;  var tmin = scopeMin;  while(tmin < scopeMax){   var x0 = tmin;    var x1 = tmin+interval;   var samplenum = 0;   for(var i=0;i<girth.length;i++){    if((scopeMin == x0 && girth[i] < x0) || (x0 <= girth[i] && x1 > girth[i])     ||(scopeMin == x1 && girth[i] > x1)) {     samplenum++;        }   }   tmin += interval;   edata.push([x0, x1, samplenum]);  }  var option = {   color: ['rgb(25, 183, 207)'],   grid: {    top: 80,    containLabel: true   },   xAxis: [{    type: 'value',    min: scopeMin,    max: scopeMax,    interval: interval   }],   yAxis: [{    type: 'value',   }],   series: [{    name: 'height',    type: 'custom',    renderItem: renderItem,    label: {     normal: {      show: true,      position: 'top'     }    },    encode: {     x: [0, 1],     y: 2,     tooltip: 2,     label: 2    },    // data: data    data: edata   }]  };  myChart1.setOption(option);  window.onresize = function () {   myChart1.resize();  } } function renderItem(params, api) {  var yValue = api.value(2);  var start = api.coord([api.value(0), yValue]);  var size = api.size([api.value(1) - api.value(0), yValue]);  var style = api.style();  return {   type: 'rect',   shape: {    x: start[0] + 1,    y: start[1],    width: size[0] - 2,    height: size[1]   },   style: style  }; }</script>