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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