echarts基本地图

var data = [     {name: '杭州', value: 250}];var geoCoordMap = {    '杭州':[120.19,30.26]};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 = {    backgroundColor: '#404a59',    //标题    title: {        text: '测试',        subtext: '',        sublink: '',        left: 'center',        textStyle: {            color: '#fff'        }    },    //鼠标悬浮显示值    tooltip : {        trigger: 'item',        show:false    },    geo: {        map: 'china',        label: {            emphasis: {                show: false//显示区域位置            }        },        roam: true,//缩放和平移        itemStyle: {            //常态            normal: {                areaColor: '#323c48',//地图区域的颜色                borderColor: '#111'//图形的描边颜色            },            //高亮状态            emphasis: {                areaColor: '#2a333d'//图形的颜色            }        }    },    series : [        {            name: 'Top 5',            type: 'effectScatter',            coordinateSystem: 'geo',            data: convertData(data.sort(function (a, b) {                return b.value - a.value;            }).slice(0, 6)),            //点大小            symbolSize: function (val) {                return val[2] / 10;            },            showEffectOn: 'render',//绘制完成后显示波纹            rippleEffect: {                period:1,//动画速度                scale:2,//波纹的范围                brushType: 'fill'//波纹样式(fill填充型)            },            hoverAnimation: true,            label: {                normal: {                    formatter: '{b}',                    position: 'right',                    show: false                }            },            itemStyle: {                normal: {                    color: '#f4e925',//圆颜色                    shadowBlur: 10,                    shadowColor: '#333'//阴影                }            },            zlevel: 1        }    ]};