小汽车的位置调整 已经tooltip显示样式echarts lines配置项内容和展示

要的效果是这样的，小汽车的位置在那条线的上方，不是中， tooltip样式要个三角箭头

      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]
};

var BJData = [
    [{name:'北京'}, {name:'上海',value:95}],
    [{name:'北京'}, {name:'广州',value:90}],
    [{name:'北京'}, {name:'大连',value:80}],
    [{name:'北京'}, {name:'南宁',value:70}],
    [{name:'北京'}, {name:'南昌',value:60}],
    [{name:'北京'}, {name:'拉萨',value:50}],
    [{name:'北京'}, {name:'长春',value:40}],
    [{name:'北京'}, {name:'包头',value:30}],
    [{name:'北京'}, {name:'重庆',value:20}],
    [{name:'北京'}, {name:'常州',value:10}]
];

var SHData = [
    [{name:'上海'},{name:'包头',value:95}],
    [{name:'上海'},{name:'昆明',value:90}],
    [{name:'上海'},{name:'广州',value:80}],
    [{name:'上海'},{name:'郑州',value:70}],
    [{name:'上海'},{name:'长春',value:60}],
    [{name:'上海'},{name:'重庆',value:50}],
    [{name:'上海'},{name:'长沙',value:40}],
    [{name:'上海'},{name:'北京',value:30}],
    [{name:'上海'},{name:'丹东',value:20}],
    [{name:'上海'},{name:'大连',value:10}]
];

var GZData = [
    [{name:'广州'},{name:'福州',value:95}],
    [{name:'广州'},{name:'太原',value:90}],
    [{name:'广州'},{name:'长春',value:80}],
    [{name:'广州'},{name:'重庆',value:70}],
    [{name:'广州'},{name:'西安',value:60}],
    [{name:'广州'},{name:'成都',value:50}],
    [{name:'广州'},{name:'常州',value:40}],
    [{name:'广州'},{name:'北京',value:30}],
    [{name:'广州'},{name:'北海',value:20}],
    [{name:'广州'},{name:'海口',value:10}]
];

var planePath = 'path://M571.865088 739.278848c0 18.510848 7.627776 36.907008 20.738048 49.992704 13.121536 13.07648 31.540224 20.704256 50.086912 20.704256 18.532352 0 36.962304-7.627776 50.072576-20.704256 13.111296-13.085696 20.739072-31.481856 20.739072-49.992704 0-18.509824-7.627776-36.905984-20.739072-49.992704s-31.541248-20.703232-50.072576-20.703232c-18.546688 0-36.965376 7.616512-50.086912 20.703232C579.492864 702.372864 571.865088 720.769024 571.865088 739.278848L571.865088 739.278848zM571.865088 739.278848M78.727168 739.278848c0 18.510848 7.616512 36.907008 20.72576 49.992704 13.109248 13.07648 31.541248 20.704256 50.086912 20.704256 18.533376 0 36.952064-7.627776 50.074624-20.704256 13.109248-13.085696 20.738048-31.481856 20.738048-49.992704 0-18.509824-7.6288-36.905984-20.738048-49.992704-13.121536-13.08672-31.541248-20.703232-50.074624-20.703232-18.545664 0-36.97664 7.616512-50.086912 20.703232S78.727168 720.769024 78.727168 739.278848L78.727168 739.278848zM78.727168 739.278848M744.40704 733.80864c0 1.835008-0.058368 3.658752-0.139264 5.470208l87.581696 0 0-93.730816L695.406592 645.548032C724.834304 663.96672 744.40704 696.602624 744.40704 733.80864L744.40704 733.80864zM744.40704 733.80864M860.12416 550.65088l0-34.276352 89.334784 0 0-74.561536-89.334784 0 0-35.982336 145.122304 0 0-52.278272L860.12416 353.552384 860.12416 248.373248c0-12.198912-10.294272-22.07744-22.966272-22.07744L337.154048 226.295808c-12.683264 0-22.965248 9.878528-22.965248 22.07744l0 336.32256c0 12.186624 10.283008 22.07744 22.965248 22.07744l500.004864 0c11.078656 0 20.323328-7.535616 22.480896-17.564672l164.361216 0 0-38.556672L860.12416 550.651904 860.12416 550.65088zM860.12416 550.65088M583.20896 645.548032 291.93728 645.548032l0-1.281024 0-3.854336 0-326.5024L126.043136 313.910272c0 0-33.790976 11.471872-79.50336 76.802048C11.387904 440.96 1.798144 499.008512 0.2048 515.278848c-0.461824 4.53632 0 18.223104 0 18.223104l0 106.91072L0.181248 640.412672l0 5.13536 0 23.03488 0 70.695936 43.48416 0c-0.09216-1.811456-0.13824-3.6352-0.13824-5.470208 0-24.708096 8.633344-47.373312 23.03488-65.225728 7.293952-9.035776 16.064512-16.838656 25.954304-23.03488 0.704512-0.425984 1.396736-0.86528 2.112512-1.281024 2.308096-1.373184 4.6848-2.665472 7.108608-3.854336 13.894656-6.844416 29.53216-10.72128 46.082048-10.72128 16.536576 0 32.186368 3.876864 46.081024 10.72128 2.423808 1.188864 4.800512 2.481152 7.120896 3.854336 0.704512 0.415744 1.408 0.85504 2.112512 1.281024 9.877504 6.196224 18.661376 13.999104 25.954304 23.03488 14.391296 17.85344 23.023616 40.517632 23.023616 65.225728 0 1.835008-0.04608 3.658752-0.139264 5.470208l280.861696 0c-0.080896-1.741824-0.125952-3.484672-0.125952-5.250048C532.708352 696.372224 552.984576 663.469056 583.20896 645.548032L583.20896 645.548032zM254.015488 443.96032l0 14.99136 0 39.84896L72.89856 498.80064l0-51.562496 0-3.277824 0-18.015232 18.234368-18.4064 18.187264-18.210816 18.08384-17.887232 18.557952-18.742272 108.053504 0L254.015488 443.96032 254.015488 443.96032zM254.015488 443.96032';

var convertData = function (data) {
    var res = [];
    for (var i = 0; i < data.length; i++) {
        var dataItem = data[i];
        var fromCoord = geoCoordMap[dataItem[0].name];
        var toCoord = geoCoordMap[dataItem[1].name];
        if (fromCoord && toCoord) {
            res.push({
                fromName: dataItem[0].name,
                toName: dataItem[1].name,
                coords: [fromCoord, toCoord]
            });
        }
    }
    return res;
};

var color = ['#a6c84c', '#ffa022', '#46bee9'];
var series = [];
[['北京', BJData], ['上海', SHData], ['广州', GZData]].forEach(function (item, i) {
    series.push({
        name: item[0] + ' Top10',
        type: 'lines',
        zlevel: 1,
        effect: {
            show: true,
            period: 6,
            trailLength: 0.7,
            color: '#fff',
            symbolSize: 3
        },
        lineStyle: {
            normal: {
                color: color[i],
                width: 0,
                curveness: 0.2
            }
        },
        data: convertData(item[1])
    },
    {
        name: item[0] + ' Top10',
        type: 'lines',
        zlevel: 2,
        symbol: ['none', 'arrow'],
        symbolSize: 10,
        effect: {
            show: true,
            period: 6,
            trailLength: 0,
            symbol: planePath,
            symbolSize: 15
        },
        lineStyle: {
            normal: {
                color: color[i],
                width: 1,
                opacity: 0.6,
                curveness: 0.2
            }
        },
        data: convertData(item[1])
    },
    {
        name: item[0] + ' Top10',
        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])
            };
        })
    });
});

option = {
    backgroundColor: '#404a59',
    title : {
        text: '模拟迁徙',
        subtext: '数据纯属虚构',
        left: 'center',
        textStyle : {
            color: '#fff'
        }
    },
    tooltip : {
        trigger: 'item'
    },
    legend: {
        orient: 'vertical',
        top: 'bottom',
        left: 'right',
        data:['北京 Top10', '上海 Top10', '广州 Top10'],
        textStyle: {
            color: '#fff'
        },
        selectedMode: 'single'
    },
    geo: {
        map: 'china',
        label: {
            emphasis: {
                show: false
            }
        },
        roam: true,
        itemStyle: {
            normal: {
                areaColor: '#323c48',
                borderColor: '#404a59'
            },
            emphasis: {
                areaColor: '#2a333d'
            }
        }
    },
    series: series
};