数据流动图
引用echarts迁徙图，在此基础上加了数据，以及改变流动形状，以及其他，并且重点加了注释，奉上代码，供君参考。
效果图：
迁徙图.png
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<title>Document</title></head><body>
<div id="container" style="width: 100vw;height: 100vh;padding: 0;margin: 0;"></div></body><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="http://echarts.baidu.com/gallery/vendors/echarts/echarts.min.js"></script><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="http://echarts.baidu.com/gallery/vendors/echarts/map/js/china.js"></script><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="http://echarts.baidu.com/gallery/vendors/echarts/extension/bmap.min.js"></script><script>
// 该部分数据可以放在json文件中，用ajax引用，如果没有的城市经纬度，可复制到此。
var geoCoordMap = { '上海': [121.4648,31.2891], '东莞': [113.8953,22.901], '东营': [118.7073,37.5513], '中山': [113.4229,22.478], '临汾': [111.4783,36.1615], '临沂': [118.3118,35.2936], '丹东': [124.541,40.4242], '丽水': [119.5642,28.1854], '乌鲁木齐': [87.9236,43.5883], '佛山': [112.8955,23.1097], '保定': [115.0488,39.0948], '兰州': [103.5901,36.3043], '包头': [110.3467,41.4899], '北京': [116.4551,40.2539], '北海': [109.314,21.6211], '南京': [118.8062,31.9208], '南宁': [108.479,23.1152], '南昌': [116.0046,28.6633], '南通': [121.1023,32.1625], '厦门': [118.1689,24.6478], '台州': [121.1353,28.6688], '合肥': [117.29,32.0581], '呼和浩特': [111.4124,40.4901], '咸阳': [108.4131,34.8706], '哈尔滨': [127.9688,45.368], '唐山': [118.4766,39.6826], '嘉兴': [120.9155,30.6354], '大同': [113.7854,39.8035], '大连': [122.2229,39.4409], '天津': [117.4219,39.4189], '太原': [112.3352,37.9413], '威海': [121.9482,37.1393], '宁波': [121.5967,29.6466], '宝鸡': [107.1826,34.3433], '宿迁': [118.5535,33.7775], '常州': [119.4543,31.5582], '广州': [113.5107,23.2196], '廊坊': [116.521,39.0509], '延安': [109.1052,36.4252], '张家口': [115.1477,40.8527], '徐州': [117.5208,34.3268], '德州': [116.6858,37.2107], '惠州': [114.6204,23.1647], '成都': [103.9526,30.7617], '扬州': [119.4653,32.8162], '承德': [117.5757,41.4075], '拉萨': [91.1865,30.1465], '无锡': [120.3442,31.5527], '日照': [119.2786,35.5023], '昆明': [102.9199,25.4663], '杭州': [119.5313,29.8773], '枣庄': [117.323,34.8926], '柳州': [109.3799,24.9774], '株洲': [113.5327,27.0319], '武汉': [114.3896,30.6628], '汕头': [117.1692,23.3405], '江门': [112.6318,22.1484], '沈阳': [123.1238,42.1216], '沧州': [116.8286,38.2104], '河源': [114.917,23.9722], '泉州': [118.3228,25.1147], '泰安': [117.0264,36.0516], '泰州': [120.0586,32.5525], '济南': [117.1582,36.8701], '济宁': [116.8286,35.3375], '海口': [110.3893,19.8516], '淄博': [118.0371,36.6064], '淮安': [118.927,33.4039], '深圳': [114.5435,22.5439], '清远': [112.9175,24.3292], '温州': [120.498,27.8119], '渭南': [109.7864,35.0299], '湖州': [119.8608,30.7782], '湘潭': [112.5439,27.7075], '滨州': [117.8174,37.4963], '潍坊': [119.0918,36.524], '烟台': [120.7397,37.5128], '玉溪': [101.9312,23.8898], '珠海': [113.7305,22.1155], '盐城': [120.2234,33.5577], '盘锦': [121.9482,41.0449], '石家庄': [114.4995,38.1006], '福州': [119.4543,25.9222], '秦皇岛': [119.2126,40.0232], '绍兴': [120.564,29.7565], '聊城': [115.9167,36.4032], '肇庆': [112.1265,23.5822], '舟山': [122.2559,30.2234], '苏州': [120.6519,31.3989], '莱芜': [117.6526,36.2714], '菏泽': [115.6201,35.2057], '营口': [122.4316,40.4297], '葫芦岛': [120.1575,40.578], '衡水': [115.8838,37.7161], '衢州': [118.6853,28.8666], '西宁': [101.4038,36.8207], '西安': [109.1162,34.2004], '贵阳': [106.6992,26.7682], '连云港': [119.1248,34.552], '邢台': [114.8071,37.2821], '邯郸': [114.4775,36.535], '郑州': [113.4668,34.6234], '鄂尔多斯': [108.9734,39.2487], '重庆': [107.7539,30.1904], '金华': [120.0037,29.1028], '铜川': [109.0393,35.1947], '银川': [106.3586,38.1775], '镇江': [119.4763,31.9702], '长春': [125.8154,44.2584], '长沙': [113.0823,28.2568], '长治': [112.8625,36.4746], '阳泉': [113.4778,38.0951], '青岛': [120.4651,36.3373], '韶关': [113.7964,24.7028]
};// 该部分数据可以写在json文件中，用ajax引用到此，var BJData = [
[{name:'北京',value:80}, {name:'上海',value:95}],
[{name:'上海',value:95}, {name:'北京',value:80}],
[{name:'北京',value:80}, {name:'拉萨',value:90}],
[{name:'北京',value:80}, {name:'大连',value:80}],
[{name:'北京',value:80}, {name:'南宁',value:70}],
];var SHData = [
[{name:'上海',value:80},{name:'包头',value:95}],
[{name:'上海',value:80},{name:'昆明',value:90}],
[{name:'上海',value:80},{name:'广州',value:80}],
[{name:'上海',value:80},{name:'郑州',value:70}],
[{name:'上海',value:80},{name:'长春',value:60}]
];var GZData = [
[{name:'广州',value:80},{name:'福州',value:95}], //name是要和geoCoordMap里面的名字一致，目的获取其经纬度；value为了设置出发点和终点的圆圈大小以及这里作为外部传入数据使用
[{name:'广州',value:80},{name:'太原',value:90}],
[{name:'广州',value:80},{name:'长春',value:80}],
[{name:'广州',value:80},{name:'重庆',value:70}],
[{name:'广州',value:80},{name:'西安',value:60}],
[{name:'广州',value:80},{name:'成都',value:50}],
];console.log(JSON.stringify(SHData));var convertData = function (data) { var res = []; for (var i = 0; i < data.length; i++) { var dataItem = data[i]; var fromCoord = geoCoordMap[dataItem[0].name]; //获得起始点名字
var toCoord = geoCoordMap[dataItem[1].name]; //获得终点名字
var flex = dataItem[1].value; if (fromCoord && toCoord) {
res.push({ fromName: dataItem[0].name, toName: dataItem[1].name, coords: [fromCoord, toCoord], //起始点经纬度和终点经纬度
flex: flex
});
}
} return res;
};var color = ['#a6c84c', '#ffa022', '#46bee9'];var series = [];
[['北京', BJData], ['上海', SHData], ['广州', GZData]].forEach(function (item, i) {
series.push( // 设置运动的阴影
{ name: item[0], //name要和地图设置中的legend中的data一一对应
type: 'lines', zlevel: 1, effect: { show: true, period: 6, //从起始点到终点的时间，只支持number类型，不支持回调函数及其他
trailLength: 0.7, //阴影的长度
color: '#fff', //阴影的颜色
symbolSize: 3 //阴影的尺寸
}, lineStyle: { //阴影运动轨迹线的设置，width为0，隐藏此线
normal: { color: color[i], width: 0, curveness: 0.2
}
}, data: convertData(item[1])
}, // 设置运动的物体，这里为箭头
{ name: item[0], type: 'lines', zlevel: 2, symbol: ['none', 'arrow'], symbolSize: 10, effect: { show: true, period: 6, trailLength: 0, symbol:['arrow'], //线的类型为箭头，可传入，可自定义，具体可见echarts官网
symbolSize: 10
}, lineStyle: { normal: { color: function(params){ //color支持回调函数，所以可根据数据自定义
var number = params.data.flex; if(number>=91){ return color[0];
}else if(number>79 && number<91){ return color[1];
}else{ return color[2];
}
}, width: 1, opacity: 0.6, curveness: 0.2
}
}, data: convertData(item[1])
}, // 设置终点坐标圆圈
{ 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: color[i]
}
}, data: item[1].map(function (dataItem) { return { name: dataItem[1].name, value: geoCoordMap[dataItem[1].name].concat([dataItem[1].value])
};
})
}, // 设置起点坐标圆圈
{ 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] / 10;
}, itemStyle: { normal: { color: color[i]
}
}, data: item[1].map(function (dataItem) { return { name: dataItem[0].name, value: geoCoordMap[dataItem[0].name].concat([dataItem[0].value])
};
})
});
});var myChart = echarts.init(document.getElementById("container"));
option = { backgroundColor: '#404a59', tooltip : { trigger: 'item', formatter:function(params){ if(params.componentSubType == 'effectScatter'){ //当鼠标移到圆圈上不出现提示数据
return '';
} if(params.componentSubType == 'lines'){ //当鼠标移到线上出现的提示数据
return params.data.fromName + '<br/>' + '到' + params.data.toName + '<br/>' + '数据为：' + params.data.flex;
}
}
}, legend: { orient: 'vertical', top: 'bottom', left: 'right', data:['北京', '上海', '广州'], textStyle: { color: '#fff'
}, selectedMode: 'single'
}, geo: { map: 'china', label: { emphasis: { show: false, //设置鼠标移上去是否出现文字
color:'#fff'
}
}, roam: true, scaleLimit:{min:0.6,max:1.3}, //地图放大缩小倍数
itemStyle: { normal: { areaColor: 'rgba(0,0,0,0.6)', borderColor: '#404a59'
}, emphasis: { areaColor: '#2a333d'
}
}
}, series: series
};
myChart.setOption(option);// 给地图做适配window.onresize = function(){
echarts.init(document.getElementById('container')).resize();
}</script></html>
作者：孙静静
链接：https://www.jianshu.com/p/2cc360987b1f
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