中国地图省市下钻描点
程序员文章站
2024-01-19 12:32:52
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接到一个需求，要从中国地图点击后下钻到省，在省地图上显示散点。遇到两个有困难的地方，一个是下钻后再省地图描点，再就是后台传经纬度直接画点。
我找了一些资料只找到下钻的，没有下钻后再画散点的只能自己玩了。其实也不难就是先找到点击事件再找到点击事件中根据对应省json画地图的地方就可以了，代码如下
var zhongguo = 'assets/json/china.json';
var hainan = "assets/json/hainan.json";
var xizang = "assets/json/xizang.json";
var zhejiang = "assets/json/zhejiang.json";
var yunnan = "assets/json/yunnan.json";
var * = "assets/json/*.json";
var tianjin = "assets/json/tianjin.json";
var sichuan = "assets/json/sichuan.json";
var shanxi = "assets/json/shanxi.json";
var shangxi = "assets/json/shanxi1.json";
var shanghai = "assets/json/shanghai.json";
var shangdong = "assets/json/shandong.json";
var qinghai = "assets/json/qinghai.json";
var ningxia = "assets/json/ningxia.json";
var neimenggu = "assets/json/neimenggu.json";
var liaoning = "assets/json/liaoning.json";
var jilin = "assets/json/jilin.json";
var jiangxi = "assets/json/jiangxi.json";
var jiangsu = "assets/json/jiangsu.json";
var hunan = "assets/json/hunan.json";
var hubei = "assets/json/hubei.json";
var henan = "assets/json/henan.json";
var heilongjiang = "assets/json/heilongjiang.json";
var hebei = "assets/json/hebei.json";
var guizhou = "assets/json/guizhou.json";
var guangxi = "assets/json/guangxi.json";
var guangdong = "assets/json/guangdong.json";
var gansu = "assets/json/gansu.json";
var chongqing = "assets/json/chongqing.json";
var aomen = "assets/json/aomen.json";
var anhui = "assets/json/anhui.json";
var beijing = "assets/json/beijing.json";
var fujian = "assets/json/fujian.json";
var xianggang = "assets/json/xianggang.json";
echarts.extendsMap = function(id, opt) {
// 实例
var chart = this.init(document.getElementById(id));
var geoCoordMap = {
'北碚': [106.50,29.81]
}
var geoCoordMap = {
'北京':[116.4,39.9],
'张家口':[114.9,40.8],
'上海':[121.5,31.2],
'佛山':[113.1,23],
'惠州':[114.4,23.1],
'嘉兴':[120.8,30.7],
'黔西南州':[104.9,25.1],
'湖州':[120.1,30.9],
'苏州':[120.6,31.3],
'无锡':[120.3,31.5],
'南京':[118.8,32.1],
'太原':[112.5,37.9],
'晋中':[112.7,37.7],
'西安':[108.9,34.3],
'长沙':[112.9,28.2],
'株洲':[113.2,27.8],
'武汉':[114.3,30.6],
'荆州':[112.2,30.3],
'黄石':[115,30.2],
'合肥':[117.2,31.8],
'九华山':[117.8,30.5],
'泉州':[118.7,24.9],
'福州':[119.3,26.1],
'南昌':[115.9,28.7],
'九江':[116,29.7],
'仙桃':[113.4,30.4],
'天门':[113.2,30.7],
'东戴河':[119.9,40],
'广州':[113.3,23.1],
'大庆':[125.03,46.58],
'*': [86.61 , 40.79],
'*':[89.13 , 30.66],
'黑龙江':[128.34 , 47.05],
'吉林':[126.32 , 43.38],
'辽宁':[123.42 , 41.29],
'内蒙古':[112.17 , 42.81],
'北京':[116.40 , 40.40 ],
'宁夏':[106.27 , 36.76],
'山西':[111.95,37.65],
'河北':[115.21 , 38.44],
'天津':[117.04 , 39.52],
'青海':[97.07 , 35.62],
'甘肃':[103.82 , 36.05],
'山东':[118.01 , 36.37],
'陕西':[108.94 , 34.46],
'河南':[113.46 , 34.25],
'安徽':[117.28 , 31.86],
'江苏':[120.26 , 32.54],
'上海':[121.46 , 31.28],
'四川':[103.36 , 30.65],
'湖北':[112.29 , 30.98],
'浙江':[120.15 , 29.28],
'重庆':[107.51 , 29.63],
'湖南':[112.08 , 27.79],
'江西':[115.89 , 27.97],
'贵州':[106.91 , 26.67],
'福建':[118.31 , 26.07],
'云南':[101.71 , 24.84],
'*':[121.01 , 23.54],
'广西':[108.67 , 23.68],
'广东':[113.98 , 22.82],
'海南':[110.03 , 19.33]
};
var data = [
{ name: '*', value: 57 },
{ name: '张家口', value: 47 },
{ name: '上海', value: 3 },
{ name: '上海', value: 3 },
{ name: '佛山', value: 22 },
{ name: '嘉兴', value: 6 },
{ name: '黔西南州', value: 17 },
{ name: '湖州', value: 34 },
{ name: '苏州', value: 33 },
{ name: '无锡', value: 5},
{ name: '南京', value: 5 },
{ name: '太原', value: 55 },
{ name: '晋中', value: 23 },
{ name: '西安', value: 4 },
{ name: '长沙', value: 49 },
{ name: '株洲', value: 17 },
{ name: '武汉', value: 57 },
{ name: '荆州', value: 10 },
{ name: '黄石', value: 21 },
{ name: '合肥', value: 54 },
{ name: '九华山', value: 5 },
{ name: '泉州', value: 45 },
{ name: '福州', value: 9 },
{ name: '九江', value: 3 },
{ name: '仙桃', value: 63 },
{ name: '天门', value: 10 },
{ name: '东戴河', value: 28 },
{ name: '广州', value: 29 }
];
var provinceData = [
{ name: '海南', value: '海南' },
{ name: '广东', value: 47 },
{ name: '广西', value: 3 },
{ name: '*', value: 3 },
{ name: '云南', value: 22 },
{ name: '福建', value: 6 },
{ name: '贵州', value: 17 },
{ name: '江西', value: 34 },
{ name: '湖南', value: 33 },
{ name: '重庆', value: 5},
{ name: '浙江', value: 5 },
{ name: '湖北', value: 55 },
{ name: '四川', value: 23 },
{ name: '上海', value: 4 },
{ name: '江苏', value: 49 },
{ name: '安徽', value: 17 },
{ name: '河南', value: 57 },
{ name: '陕西', value: 10 },
{ name: '山东', value: 21 },
{ name: '甘肃', value: 54 },
{ name: '青海', value: 5 },
{ name: '河北', value: 45 },
{ name: '山西', value: 9 },
{ name: '宁夏', value: 3 },
{ name: '内蒙古', value: 63 },
{ name: '辽宁', value: 10 },
{ name: '吉林', value: 28 },
{ name: '黑龙江', value: 29 },
{ name: '*', value: 29 },
{ name: '*', value: 29 }
];
var curGeoJson = {};
let convertData = function (data) {
let res = [];
for (let i = 0; i < data.length; i++) {
let geoCoord = geoCoordMap[data[i].name];
if (geoCoord) {
res.push({
name: data[i].name,
value: geoCoord.concat(data[i].value)
});
}
}
return res;
};
var cityMap = {
'中国': zhongguo,
'上海': shanghai,
'河北': hebei,
'山西': shangxi,
'内蒙古': neimenggu,
'辽宁': liaoning,
'吉林': jilin,
'黑龙江': heilongjiang,
'江苏': jiangsu,
'浙江': zhejiang,
'安徽': anhui,
'福建': fujian,
'江西': jiangxi,
'山东': shangdong,
'河南': henan,
'湖北': hubei,
'湖南': hunan,
'广东': guangdong,
'广西': guangxi,
'海南': hainan,
'四川': sichuan,
'贵州': guizhou,
'云南': yunnan,
'*': xizang,
'陕西': shanxi,
'甘肃': gansu,
'青海': qinghai,
'宁夏': ningxia,
'*': *,
'北京': beijing,
'天津': tianjin,
'重庆': chongqing,
'香港': xianggang,
'澳门': aomen
};
var levelColorMap = {
'1': 'rgba(241, 109, 115, .8)',
'2': 'rgba(255, 235, 59, .7)',
'3': 'rgba(147, 235, 248, 1)'
};
var defaultOpt = {
mapName: 'china', // 地图展示
goDown: false, // 是否下钻
// bgColor: '#404a59', // 画布背景色
activeArea: [], // 区域高亮,同echarts配置项
data: [],
// 下钻回调(点击的地图名、实例对象option、实例对象)
callback: function(name, option, instance) {}
};
if (opt) opt = this.util.extend(defaultOpt, opt);
// 层级索引
var name = [opt.mapName];
var idx = 0;
var pos = {
leftPlus: 115,
leftCur: 150,
left: 198,
top: 50
};
var line = [
[0, 0],
[8, 11],
[0, 22]
];
// style
var style = {
font: '18px "Microsoft YaHei", sans-serif',
textColor: '#eee',
lineColor: 'rgba(147, 235, 248, .8)'
};
var handleEvents = {
/**
* i 实例对象
* o option
* n 地图名
**/
resetOption: function(i, o, n) {
debugger
var breadcrumb = this.createBreadcrumb(n);
var j = name.indexOf(n);
var l = o.graphic.length;
if (j < 0) {
o.graphic.push(breadcrumb);
o.graphic[0].children[0].shape.x2 = 145;
o.graphic[0].children[1].shape.x2 = 145;
if (o.graphic.length > 2) {
var cityData = [];
var cityJson;
for (var x = 0; x < opt.data.length; x++) {
if (n === opt.data[x].city) {
$([opt.data[x]]).each(function(index, data) {
cityJson = {
city: data.city,
name: data.name,
value: data.value,
crew: data.crew,
company: data.company,
position: data.position,
region: data.region
};
cityData.push(cityJson)
})
}
}
if (cityData != null) {
o.series[0].data = convertData(data.sort(function (a, b) {
return b.value - a.value;
}).slice(0, 50));
} else {
o.series[0].data = convertData(provinceData.sort(function (a, b) {
return b.value - a.value;
}).slice(0, 50));
}
}
name.push(n);
idx++;
} else {
o.graphic.splice(j + 2, l);
if (o.graphic.length <= 2) {
o.graphic[0].children[0].shape.x2 = 60;
o.graphic[0].children[1].shape.x2 = 60;
console.log(handleEvents.initSeriesData(provinceData));
o.series[0].data = handleEvents.initSeriesData(provinceData);
};
name.splice(j + 1, l);
idx = j;
pos.leftCur -= pos.leftPlus * (l - j - 1);
};
o.geo.map = n;
o.geo.zoom = 0.4;
i.clear();
i.setOption(o);
this.zoomAnimation();
opt.callback(n, o, i);
},
/**
* name 地图名
**/
createBreadcrumb: function(name) {
var cityToPinyin = {
'中国': 'zhongguo',
'上海': 'shanghai',
'河北': 'hebei',
'山西': 'shangxi',
'内蒙古': 'neimenggu',
'辽宁': 'liaoning',
'吉林': 'jilin',
'黑龙江': 'heilongjiang',
'江苏': 'jiangsu',
'浙江': 'zhejiang',
'安徽': 'anhui',
'福建': 'fujian',
'江西': 'jiangxi',
'山东': 'shangdong',
'河南': 'henan',
'湖北': 'hubei',
'湖南': 'hunan',
'广东': 'guangdong',
'广西': 'guangxi',
'海南': 'hainan',
'四川': 'sichuan',
'贵州': 'guizhou',
'云南': 'yunnan',
'*': 'xizang',
'陕西': 'shanxi',
'甘肃': 'gansu',
'青海': 'qinghai',
'宁夏': 'ningxia',
'*': '*',
'北京': 'beijing',
'天津': 'tianjin',
'重庆': 'chongqing',
'香港': 'xianggang',
'澳门': 'aomen'
};
var breadcrumb = {
type: 'group',
id: name,
left: pos.leftCur + pos.leftPlus,
top: pos.top + 3,
children: [{
type: 'polyline',
left: -90,
top: -5,
shape: {
points: line
},
style: {
stroke: '#fff',
key: name
// lineWidth: 2,
},
onclick: function() {
var name = this.style.key;
handleEvents.resetOption(chart, option, name);
}
}, {
type: 'text',
left: -68,
top: 'middle',
style: {
text: name,
textAlign: 'center',
fill: style.textColor,
font: style.font
},
onclick: function() {
var name = this.style.text;
handleEvents.resetOption(chart, option, name);
}
}, {
type: 'text',
left: -68,
top: 10,
style: {
name: name,
text: cityToPinyin[name] ? cityToPinyin[name].toUpperCase() : '',
textAlign: 'center',
fill: style.textColor,
font: '12px "Microsoft YaHei", sans-serif',
},
onclick: function() {
// console.log(this.style);
var name = this.style.name;
handleEvents.resetOption(chart, option, name);
}
}]
}
pos.leftCur += pos.leftPlus;
return breadcrumb;
},
// 设置effectscatter
initSeriesData: function(data) {
var temp = [];
for (var i = 0; i < data.length; i++) {
var geoCoord = geoCoordMap[data[i].name];
if (geoCoord) {
temp.push({
name: data[i].name,
value: geoCoord.concat(data[i].value),
crew: data[i].crew,
company: data[i].company,
position: data[i].position,
region: data[i].region
});
}
};
return temp;
},
zoomAnimation: function() {
var count = null;
var zoom = function(per) {
if (!count) count = per;
count = count + per;
// console.log(per,count);
chart.setOption({
geo: {
zoom: count
}
});
if (count < 1) window.requestAnimationFrame(function() {
zoom(0.2);
});
};
window.requestAnimationFrame(function() {
zoom(0.2);
});
}
};
var option = {
backgroundColor: opt.bgColor,
tooltip: {
show: true,
trigger: 'item',
alwaysShowContent: false,
backgroundColor: 'rgba(50,50,50,0.7)',
hideDelay: 100,
triggerOn: 'mousemove',
enterable: true,
position: ['60%', '70%'],
formatter: function(params, ticket, callback) {
return '简称：' + params.data.name + '<br/>' + '机组：' + params.data.crew + '万千瓦' + '<br/>' + '公司名称：' + params.data.company + '<br/>' + '所属大区：' + params.data.region + '<br/>' + '所在位置：' + params.data.position
}
},
graphic: [{
type: 'group',
left: pos.left,
top: pos.top - 4,
children: [{
type: 'line',
left: 0,
top: -20,
shape: {
x1: 0,
y1: 0,
x2: 60,
y2: 0
},
style: {
stroke: style.lineColor,
}
}, {
type: 'line',
left: 0,
top: 20,
shape: {
x1: 0,
y1: 0,
x2: 60,
y2: 0
},
style: {
stroke: style.lineColor,
}
}]
},
{
id: name[idx],
type: 'group',
left: pos.left + 2,
top: pos.top,
children: [{
type: 'polyline',
left: 90,
top: -12,
shape: {
points: line
},
style: {
stroke: 'transparent',
key: name[0]
},
onclick: function() {
var name = this.style.key;
handleEvents.resetOption(chart, option, name);
}
}, {
type: 'text',
left: 0,
top: 'middle',
style: {
text: '中国',
textAlign: 'center',
fill: style.textColor,
font: style.font
},
onclick: function() {
console.log(option);
handleEvents.resetOption(chart, option, '中国');
}
}, {
type: 'text',
left: 0,
top: 10,
style: {
text: 'China',
textAlign: 'center',
fill: style.textColor,
font: '12px "Microsoft YaHei", sans-serif',
},
onclick: function() {
handleEvents.resetOption(chart, option, '中国');
}
}]
}
],
geo: {
map: opt.mapName,
roam: true,
zoom: 1,
label: {
fontSize:20,
normal: {
show: false,
textStyle: {
color: 'rgba(0, 0, 205, 0)'
}
},
emphasis: {
label:{
show:false
},
textStyle: {
color: 'rgba(0, 0, 205, 0)'
}
}
},
itemStyle: {
normal: {
borderColor: 'rgba(0, 0, 205, 1)',
borderWidth: 1,
areaColor: '#F5FFFA',
shadowColor: 'rgba(128, 217, 248, 1)',
// shadowColor: 'rgba(255, 255, 255, 1)',
shadowOffsetX: -2,
shadowOffsetY: 2,
shadowBlur: 10
},
emphasis: {
label:{
show:false,
fontSize:0
},
areaColor: '#389BB7',
borderWidth: 0
}
},
regions: opt.activeArea.map(function(item) {
alert(item.name);
if (typeof item !== 'string') {
return {
name: item.name,
itemStyle: {
normal: {
areaColor: item.areaColor || '#389BB7'
}
},
label: {
normal: {
show: item.showLabel,
textStyle: {
color: '#fff'
}
}
}
}
} else {
return {
name: item,
itemStyle: {
normal: {
borderColor: '#FFFFFF',
areaColor: '#FFFFFF'
}
}
}
}
})
},
series: [{
type: 'scatter',
symbolSize:1,
coordinateSystem: 'geo',
showEffectOn: 'render',
rippleEffect: {
period: 15,
scale:35,
brushType: 'fill'
},
label:{
show:true,
formatter:'{b}'
},
hoverAnimation: true,
itemStyle: {
normal: {
color: '#000000',
shadowBlur: 10,
shadowColor: '#333'
}
},
data: handleEvents.initSeriesData(provinceData)
}]
};
chart.setOption(option);
// 添加事件
chart.on('click', function(params) {
var _self = this;
if (opt.goDown && params.name !== name[idx]) {
if (cityMap[params.name]) {
var url = cityMap[params.name];
$.get(url, function(response) {
//console.log(response);
curGeoJson = response;
echarts.registerMap(params.name, response);
option.geo.label.normal.show=false;
option.series[0].data = convertData(data.sort(function (a, b) {
return b.value - a.value;
}).slice(0, 50));
handleEvents.resetOption(_self, option, params.name);
});
}
}
});
return chart;
};
$.getJSON(zhongguo, function(geoJson) {
echarts.registerMap('中国', geoJson);
debugger
var myChart = echarts.extendsMap('china_map', {
// bgColor: '#154e90', // 画布背景色
mapName: '中国', // 地图名
goDown: true, // 是否下钻
// 下钻回调
callback: function(name, option, instance) {
//console.log(name, option, instance);
},
});
})代码主体是找社区里大佬分享的，分析了下就是在点击事件里有个resetOption方法，然后这个option的series里的data改成自己要的散点坐标就ok啦。
然后就是后台传坐标
$.ajax({
url:"../../../proxy/yl/gc/v1/getMemberUnit/getMemberUnitListByCityCode", //请求的url地址
dataType:"json",
contentType: 'application/json',
async:false,
data:JSON.stringify(obj3), //参数值
type:"POST", //请求方式
success:function(req){
//请求成功时处理
for(var i = 0;i<req.data.length;i++){
geoCoordMap[req.data[i].unitName]=req.data[i].coordinate;
var json ={};
json.name = req.data[i].unitName;
json.value = req.data[i].unitAddr;
json.addr = req.data[i].unitAddr;
json.leader = req.data[i].leader;
provinceData.push(json);
}
}一开始没太高清楚这个画散点的机制，后来发现就是一个json里面根据省市的名字作为属性，值作为坐标来画的，搞清楚这点就只需要在后台稍作处理，把数据库的字符串处理成数组就可以了。
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