echarts地图迁徙图（根据数据设置线的颜色）
作者：互联网
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>echarts中国地图</title>
<style>
.centerItem {
width: 856px;
height: 640px;
background-color: #003077;
margin: 110px auto 0 auto;
}
</style>
</head>
<body>
<!-- 中国地图展示 -->
<div id="mapBox" class="centerItem"></div>
<!-- 引入 ECharts 文件 -->
<script src="echarts.js"></script>
<script src="china.js"></script>
<script>
// 基于准备好的dom，初始化echarts实例
var mapBoxEchart = echarts.init(document.getElementById('mapBox'));
var geoCoordMap = { //可以在地图上显示的城市的坐标信息
"石家庄": [114.52,38.05],
"长春": [125.8154, 44.2584],
"长沙": [113.0823, 28.2568],
"贵阳": [106.6992, 26.7682],
"杨凌": [109.1162, 34.2004],
"深圳": [114.5435, 22.5439],
"济南": [117.1582, 36.8701],
"海口": [110.3893, 19.8516],
"沈阳": [123.1238, 42.1216],
"武汉": [114.3896, 30.6628],
"红安": [114.23, 31.1],
"昆明": [102.9199, 25.4663],
"包头":[109.83,40.63],
"杭州": [119.5313, 29.8773],
"成都": [103.9526, 30.7617],
"拉萨": [91.1865, 30.1465],
"天津": [117.4219, 39.4189],
"合肥": [117.29, 32.0581],
"呼和浩特": [111.4124, 40.4901],
"哈尔滨": [127.9688, 45.368],
"北京": [116.4551, 40.2539],
"南京": [118.8062, 31.9208],
"南宁": [108.479, 23.1152],
"南昌": [116.0046, 28.6633],
"乌鲁木齐": [87.9236, 43.5883],
"上海": [121.4648, 31.2891],
"三亚": [109.5000, 18.2000]
};
var HFData = [ // 数据中name的城市名称必须与geoCoordMap中城市名称一致, 不然关联不上，北京到各地区的线路
[{name: "北京"}, {name: "北京",value: 87}],
[{name: "北京"}, {name: "济南",value: 87}],
[{name: "北京"}, {name: "北京",value: 101}],
[{name: "北京"}, {name: "包头",value: 101}],
[{name: "北京"}, {name: "北京",value: 150}],
[{name: "北京"}, {name: "石家庄",value: 150}],
[{name: "北京"}, {name: "北京",value: 120}],
[{name: "北京"}, {name: "哈尔滨",value: 120}],
[{name: "北京"}, {name: "北京",value: 78}],
[{name: "北京"}, {name: "长春",value: 77}],
[{name: "北京"}, {name: "北京",value: 89}],
[{name: "北京"}, {name: "天津",value: 89}],
[{name: "北京"}, {name: "北京",value: 67}],
[{name: "北京"}, {name: "乌鲁木齐",value:67}],
[{name: "北京"}, {name: "北京",value: 45}],
[{name: "北京"}, {name: "拉萨",value: 45}],
[{name: "北京"}, {name: "北京",value:56}],
[{name: "北京"}, {name: "昆明",value: 56}],
[{name: "北京"}, {name: "北京",value: 23}],
[{name: "北京"}, {name: "合肥",value: 23}],
];
var planePath = "arrow"; // 箭头的svg
// push进去线路开始-结束地点-经纬度
var convertData = function(data) {
var res = [];
for (var i = 0; i < data.length; i++) {
var dataItem = data[i];
var fromCoord = geoCoordMap[dataItem[0].name];//出发地坐标获取
var toCoord = geoCoordMap[dataItem[1].name];//目的地坐标获取
if (fromCoord && toCoord) {
res.push({
fromName: dataItem[0].name,//出发地名称
toName: dataItem[1].name,//目的地名称
numValue: dataItem[1].value,//数值
coords: [fromCoord, toCoord]
});
}
}
return res;
};
var max=0;
var len=HFData.length;
for(var i=0;i<len;i++){
if(HFData[i][1].value>max){
max=HFData[i][1].value;
}
}
var avg=0;
avg=max/3;
//var color = ['#FFDF31']; //圆圈和字的颜色，线的颜色，箭头颜色
var color1 = ['#157be8','#FFE153','#D87A80']; //蓝 黄 红
// 数据
var series = [];
// 遍历由北京到其他城市的线路
[
[ HFData,'北京']
].forEach(function(item, i) {
// 配置
series.push({
// 系列名称，用于tooltip的显示
name: item[1],
type: 'lines',
zlevel: 1, // 用于 Canvas 分层，不同zlevel值的图形会放置在不同的 Canvas 中
// effect出发到目的地 的白色尾巴线条
// 线特效的配置
effect: {
show: true,
period: 6, // 特效动画的时间，单位为 s
trailLength: 0.1, // 特效尾迹的长度。取从 0 到 1 的值，数值越大尾迹越长
color: '#46bee9', // 移动箭头拖尾颜色
symbol: planePath,
symbolSize: 6 // 特效标记的大小
},
// lineStyle出发到目的地 的线条颜色
lineStyle: {
normal: {
color: function(params){
var num = params.data.numValue;
if(num>0&&num<=avg){
return color1[0];
}else if(num>avg&&num<=2*avg){
return color1[1];
}else if(num>2*avg&&num<=3*avg){
return color1[2];
}
},
width: function(params){
var num = params.data.numValue;
if(num>0&&num<=avg){
return 1;
}else if(num>avg&&num<=2*avg){
return 20;
}else if(num>2*avg&&num<=3*avg){
return 40;
}
},
curveness: 0.2
}
},
data: convertData(item[0]) //开始到结束数据
}, {
//出发地信息
name: '北京',
type: 'lines',
zlevel: 2,
effect: {
show: true,
period: 6,
trailLength: 0,
symbol: planePath,
symbolSize: 6
},
itemStyle: {
normal: {
borderWidth: 1,
lineStyle: {
type: 'solid',
shadowBlur: 10
}
}
},
lineStyle: {
normal: {
color: function(params){
var num = params.data.numValue;
if(num>0&&num<=avg){
return color1[0];
}else if(num>avg&&num<=2*avg){
return color1[1];
}else if(num>2*avg&&num<=3*avg){
return color1[2];
}
},
width: 1.5,
opacity: 0.9,
curveness: 0.2
}
},
data: convertData(item[0])
}, {
// 目的地信息
name: item[0],
type: 'effectScatter',
coordinateSystem: 'geo',
zlevel: 2,
rippleEffect: {
brushType: 'stroke'
},
label: {
normal: {
show: true,
position: 'right',
formatter:'{b}'
}
},
/*symbolSize: function(val) {
return val[2]/ 8;
},*/
itemStyle: {
normal: {
color: function(params){
var str = params.value;
var num = str[2];
if(params.name=='北京'){
return '#F7F7F7';
} else{
if(num>0&&num<=avg){
return color1[0];
}else if(num>avg&&num<=2*avg){
return color1[1];
}else if(num>2*avg&&num<=3*avg){
return color1[2];
}
}
}
}
},
data: item[0].map(function(dataItem) {
return {
name: dataItem[1].name,
value: geoCoordMap[dataItem[1].name].concat([dataItem[1].value])
};
})
}
);
})
// 指定相关的配置项和数据
var option = {
tooltip: {
trigger: 'item',
formatter: function(params){
return params.name+":"+params.value[2]
}
},
geo: {
map: 'china',
roam: false, // 是否开启鼠标缩放和平移漫游。默认不开启。如果只想要开启缩放或者平移，可以设置成 'scale' 或者 'move'。设置成 true 为都开启
aspectScale: 0.75,
zoom: 1.20,
label: {
normal: {
show: false,
textStyle: {
color: '#00a0c9'
}
},
emphasis: { // 对应的鼠标悬浮效果
show: false,
textStyle: {
color: "#00a0c9"
}
}
},
itemStyle: {
normal: {
areaColor: '#0B1C30',
borderColor: '#0066ba'
},
emphasis: {
borderWidth: 0,
borderColor: '#0066ba',
areaColor: "#0494e1",
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
},
series: series
};
// 使用制定的配置项和数据显示图表
mapBoxEchart.setOption(option);
// echart图表自适应
window.addEventListener("resize", function() {
mapBoxEchart.resize();
});
</script>
</body>
</html>
标签：name,北京,地图,value,var,&&,迁徙,echarts,dataItem 来源： https://www.cnblogs.com/rachelch/p/15105225.html