Echarts地图实现：各省市计划录取人数

实现功能

本文将介绍如何使用 ECharts 制作一个展示中国人民大学2017年各省市计划录取人数的地图。我们将实现以下图表形式：

地图：基础的地图展示，反映不同省市的录取人数。
散点图：在地图上以散点的形式展示每个省市的录取人数。
热力图：（如果数据和需求适合，可以添加热力图的实现）

效果预览

在这里插入图片描述

实现思路

准备地图数据和录取人数数据。
使用 ECharts 初始化地图，并加载地理坐标数据。
配置散点图和地图系列，将数据与地图结合。
通过视觉映射（visualMap）展示不同录取人数的级别。
添加交互功能，如工具箱（toolbox）和提示信息（tooltip）。

关键代码

HTML结构

<div id="ECharts" class="EChartBox"></div>

JavaScript代码

<div id="ECharts" class="EChartBox"></div>
<script src="./jquery.min.js"></script>
<script src="./echarts.min.5.2.js"></script>
<script type="application/javascript">window.onload = function () {// 初始化 ECharts 图表$.getJSON('./Geochina.json', function (res) {echarts.registerMap('china', res)var myChart = echarts.init(document.getElementById('ECharts'));var name_title = "中国人民大学2017年各省市计划录取人数"var subname = '数据爬取自千栀网\n，\n上海、浙江无文理科录取人数'var nameColor = " rgb(55, 75, 113)"var name_fontFamily = '等线'var subname_fontSize = 15var name_fontSize = 18var mapName = 'china'var data = [{name: "北京", value: 177},{name: "天津", value: 42},{name: "河北", value: 102},{name: "山西", value: 81},{name: "内蒙古", value: 47},{name: "辽宁", value: 67},{name: "吉林", value: 82},{name: "黑龙江", value: 66},{name: "上海", value: 24},{name: "江苏", value: 92},{name: "浙江", value: 114},{name: "安徽", value: 109},{name: "福建", value: 116},{name: "江西", value: 91},{name: "山东", value: 119},{name: "河南", value: 137},{name: "湖北", value: 116},{name: "湖南", value: 114},{name: "重庆", value: 91},{name: "四川", value: 125},{name: "贵州", value: 62},{name: "云南", value: 83},{name: "西藏", value: 9},{name: "陕西", value: 80},{name: "甘肃", value: 56},{name: "青海", value: 10},{name: "宁夏", value: 18},{name: "新疆", value: 67},{name: "广东", value: 123},{name: "广西", value: 59},{name: "海南", value: 14},];var geoCoordMap = {};var toolTipData = [{name: "北京", value: [{name: "文科", value: 95}, {name: "理科", value: 82}]},{name: "天津", value: [{name: "文科", value: 22}, {name: "理科", value: 20}]},{name: "河北", value: [{name: "文科", value: 60}, {name: "理科", value: 42}]},{name: "山西", value: [{name: "文科", value: 40}, {name: "理科", value: 41}]},{name: "内蒙古", value: [{name: "文科", value: 23}, {name: "理科", value: 24}]},{name: "辽宁", value: [{name: "文科", value: 39}, {name: "理科", value: 28}]},{name: "吉林", value: [{name: "文科", value: 41}, {name: "理科", value: 41}]},{name: "黑龙江", value: [{name: "文科", value: 35}, {name: "理科", value: 31}]},{name: "上海", value: [{name: "文科", value: 12}, {name: "理科", value: 12}]},{name: "江苏", value: [{name: "文科", value: 47}, {name: "理科", value: 45}]},{name: "浙江", value: [{name: "文科", value: 57}, {name: "理科", value: 57}]},{name: "安徽", value: [{name: "文科", value: 57}, {name: "理科", value: 52}]},{name: "福建", value: [{name: "文科", value: 59}, {name: "理科", value: 57}]},{name: "江西", value: [{name: "文科", value: 49}, {name: "理科", value: 42}]},{name: "山东", value: [{name: "文科", value: 67}, {name: "理科", value: 52}]},{name: "河南", value: [{name: "文科", value: 69}, {name: "理科", value: 68}]},{name: "湖北", value: [{name: "文科", value: 60}, {name: "理科", value: 56}]},{name: "湖南", value: [{name: "文科", value: 62}, {name: "理科", value: 52}]},{name: "重庆", value: [{name: "文科", value: 47}, {name: "理科", value: 44}]},{name: "四川", value: [{name: "文科", value: 65}, {name: "理科", value: 60}]},{name: "贵州", value: [{name: "文科", value: 32}, {name: "理科", value: 30}]},{name: "云南", value: [{name: "文科", value: 42}, {name: "理科", value: 41}]},{name: "西藏", value: [{name: "文科", value: 5}, {name: "理科", value: 4}]},{name: "陕西", value: [{name: "文科", value: 38}, {name: "理科", value: 42}]},{name: "甘肃", value: [{name: "文科", value: 28}, {name: "理科", value: 28}]},{name: "青海", value: [{name: "文科", value: 5}, {name: "理科", value: 5}]},{name: "宁夏", value: [{name: "文科", value: 10}, {name: "理科", value: 8}]},{name: "新疆", value: [{name: "文科", value: 36}, {name: "理科", value: 31}]},{name: "广东", value: [{name: "文科", value: 63}, {name: "理科", value: 60}]},{name: "广西", value: [{name: "文科", value: 29}, {name: "理科", value: 30}]},{name: "海南", value: [{name: "文科", value: 8}, {name: "理科", value: 6}]},];/*获取地图数据*/myChart.showLoading();var mapFeatures = echarts.getMap(mapName).geoJson.features;myChart.hideLoading();mapFeatures.forEach(function (v) {// 地区名称var name = v.properties.name;// 地区经纬度geoCoordMap[name] = v.properties.cp;});// console.log("============geoCoordMap===================")// console.log(geoCoordMap)// console.log("================data======================")console.log(data)console.log(toolTipData)var max = 480,min = 9; // todovar maxSize4Pin = 100,minSize4Pin = 20;var convertData = function (data) {var res = [];for (var i = 0; i < data.length; i++) {var geoCoord = geoCoordMap[data[i].name];if (geoCoord) {res.push({name: data[i].name,value: geoCoord.concat(data[i].value),});}}return res;};option = {title: {text: name_title,subtext: subname,x: 'center',textStyle: {color: nameColor,fontFamily: name_fontFamily,fontSize: name_fontSize},subtextStyle: {fontSize: subname_fontSize,fontFamily: name_fontFamily}},tooltip: {trigger: 'item',formatter: function (params) {if (typeof (params.value)[2] == "undefined") {var toolTiphtml = ''for (var i = 0; i < toolTipData.length; i++) {if (params.name == toolTipData[i].name) {toolTiphtml += toolTipData[i].name + ':<br>'for (var j = 0; j < toolTipData[i].value.length; j++) {toolTiphtml += toolTipData[i].value[j].name + ':' + toolTipData[i].value[j].value + "<br>"}}}console.log(toolTiphtml)// console.log(convertData(data))return toolTiphtml;} else {var toolTiphtml = ''for (var i = 0; i < toolTipData.length; i++) {if (params.name == toolTipData[i].name) {toolTiphtml += toolTipData[i].name + ':<br>'for (var j = 0; j < toolTipData[i].value.length; j++) {toolTiphtml += toolTipData[i].value[j].name + ':' + toolTipData[i].value[j].value + "<br>"}}}console.log(toolTiphtml)// console.log(convertData(data))return toolTiphtml;}}},// legend: {//     orient: 'vertical',//     y: 'bottom',//     x: 'right',//     data: ['credit_pm2.5'],//     textStyle: {//         color: '#fff'//     }// },visualMap: {show: true,min: 0,max: 200,left: 'left',top: 'bottom',text: ['高', '低'], // 文本，默认为数值文本calculable: true,seriesIndex: [1],inRange: {// color: ['#3B5077', '#031525'] // 蓝黑// color: ['#ffc0cb', '#800080'] // 红紫// color: ['#3C3B3F', '#605C3C'] // 黑绿// color: ['#0f0c29', '#302b63', '#24243e'] // 黑紫黑// color: ['#23074d', '#cc5333'] // 紫红color: ['#00467F', '#A5CC82'] // 蓝绿// color: ['#1488CC', '#2B32B2'] // 浅蓝// color: ['#00467F', '#A5CC82'] // 蓝绿// color: ['#00467F', '#A5CC82'] // 蓝绿// color: ['#00467F', '#A5CC82'] // 蓝绿// color: ['#00467F', '#A5CC82'] // 蓝绿}},/*工具按钮组*/// toolbox: {//     show: true,//     orient: 'vertical',//     left: 'right',//     top: 'center',//     feature: {//         dataView: {//             readOnly: false//         },//         restore: {},//         saveAsImage: {}//     }// },geo: {show: true,map: mapName,label: {normal: {show: false},emphasis: {show: false,}},roam: true,itemStyle: {normal: {areaColor: '#031525',borderColor: '#3B5077',},emphasis: {areaColor: '#2B91B7',}}},series: [{name: '散点',type: 'scatter',coordinateSystem: 'geo',data: convertData(data),symbolSize: function (val) {return val[2] / 10;},label: {normal: {formatter: '{b}',position: 'right',show: true},emphasis: {show: true}},itemStyle: {normal: {color: '#05C3F9'}}},{type: 'map',map: mapName,geoIndex: 0,aspectScale: 0.75, //长宽比showLegendSymbol: false, // 存在legend时显示label: {normal: {show: true},emphasis: {show: false,textStyle: {color: '#fff'}}},roam: true,itemStyle: {normal: {areaColor: '#031525',borderColor: '#3B5077',},emphasis: {areaColor: '#2B91B7'}},animation: false,data: data},{name: '点',type: 'scatter',coordinateSystem: 'geo',symbol: 'pin', //气泡symbolSize: function (val) {var a = (maxSize4Pin - minSize4Pin) / (max - min);var b = minSize4Pin - a * min;b = maxSize4Pin - a * max;return a * val[2] + b;},label: {normal: {show: true,textStyle: {color: '#fff',fontSize: 9,}}},itemStyle: {normal: {color: '#F62157', //标志颜色}},zlevel: 6,data: convertData(data),},{name: 'Top 5',type: 'effectScatter',coordinateSystem: 'geo',data: convertData(data.sort(function (a, b) {return b.value - a.value;}).slice(0, 5)),symbolSize: function (val) {return val[2] / 10;},showEffectOn: 'render',rippleEffect: {brushType: 'stroke'},hoverAnimation: true,label: {normal: {formatter: '{b}',position: 'right',show: true}},itemStyle: {normal: {color: 'yellow',shadowBlur: 10,shadowColor: 'yellow'}},zlevel: 1},]};myChart.setOption(option);})}
</script>