1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
| <template>
| <div style="height:100%">
| <div id="container" />
| <div class="input-card" style="width: auto;">
| <div class="input-item">
| <button class="btn" @click="abc">显示热力图</button>
| </div>
| <div class="input-item">
| <button class="btn" @click="heatmap.hide()">关闭热力图</button>
| </div>
| </div>
| </div>
| </template>
|
| <script>
| import { heatmapData } from './heatmapData'
| // https://a.amap.com/jsapi_demos/static/resource/heatmapData.js
| export default {
| data() {
| return {
| map: null,
| heatmap: null
| }
| },
| mounted() {
| // 延迟加载，防止出现AMap not defined
| setTimeout(() => {
| this.initMap()
| this.createHeatMap()
| }, 1000)
| },
| beforeDestroy() {
| this.map && this.map.destroy()
| },
| methods: {
| abc() {
| console.log(heatmapData)
| this.heatmap.show()
| },
| initMap() {
| this.map = new AMap.Map('container', {
| resizeEnable: true,
| center: [116.480983, 39.989628],
| zoom: 11
| // mapStyle: 'amap://styles/grey' // 极夜蓝
| // 自定义地图样式：https://lbs.amap.com/dev/mapstyle/index
| })
| },
| // 判断浏览区是否支持canvas
| isSupportCanvas() {
| const elem = document.createElement('canvas')
| return !!(elem.getContext && elem.getContext('2d'))
| },
| createHeatMap() {
| console.log('这是json数据')
| console.log(heatmapData)
| if (!this.isSupportCanvas()) {
| return this.$msg.error(
| '热力图仅对支持canvas的浏览器适用,您所使用的浏览器不能使用热力图功能,请换个浏览器试试。'
| )
| }
| const __this = this
| this.map.plugin(['AMap.Heatmap'], function() {
| // 初始化heatmap对象
| __this.heatmap = new AMap.Heatmap(__this.map, {
| visible: false,
| radius: 50, // 给定半径
| opacity: [0, 0.8]
| })
| // 设置数据集：该数据为北京部分“公园”数据
| __this.heatmap.setDataSet({
| data: heatmapData,
| max: 100
| })
| })
| }
| }
| }
| </script>
|
| <style lang="less" scoped>
| @import url("https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css");
|
| #container {
| margin: 0;
| padding: 0;
| width: 100%;
| height: 100%;
| }
| .input-card .btn {
| margin-right: 1.2rem;
| width: 9rem;
| }
| </style>
|
|
