实现效果：
话不多说，上代码：
var option = {title: {show: false,text: title},tooltip: {show: true,formatter: function (a) {var str = '马力：';return str.concat(a.name + '\n\n' + '车辆数：', a.value);}},grid: {x: 0,y: 0,x2: 0,y2: 0},toolbox: {show: true,x: 'center',feature: {dataView: dataMapDataView(fileName),restore: {show: true},saveAsImage: {show: true}},},series: [{type: 'treemap',roam: false,data: [{name:220,value:1234},{name:230,value:2312},{name:240,value:567}],label: {formatter: function (a) {var str = '马力：';return str.concat(a.name + '\n\n' + '车辆数：', a.value);}}};return option;
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