1.环境准备
1）下载leaflet.js插件, 官网传送:http://leafletjs.com/
2）下载esri-leaflet.js插件, 官网传送:http://esri.github.io/esri-leaflet/
3）下载heatmap.js插件, 官网传送:https://www.patrick-wied.at/static/heatmapjs/
也可以直接在此下载，所有插件已压缩打包 https://files.cnblogs.com/files/mengjiaxing/lib.zip
2.demo样例
1）在html文件中引入所有需要用到的插件
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>heatmaptitle>
<link rel="stylesheet" href="lib/leaflet/leaflet.css">
<script src="lib/leaflet/leaflet.js">script>
<script src="lib/proj4-compressed.js">script>
<script src="lib/proj4leaflet.js">script>
<script src="lib/heatmap/heatmap.js">script>
<script src="lib/heatmap/leaflet-heatmap.js">script>
<script src="lib/leaflet/esri-leaflet.js">script>
head>
<body>
body> html>
2）加载arcgis切片服务
第一步：打开需要加载的服务，记下红线中的数据
第二步：将不同等级的Resolution拷下来放进数组里面
var res=[ 0.703125, // Level 0 0.3515625, // Level 1 0.17578125, // Level 2 0.087890625, // Level 3 0.0439453125, // Level 4 0.02197265625, 0.010986328125, 0.0054931640625, 0.00274658203125, 0.001373291015625, 6.866455078125E-4, 3.4332275390625E-4, 1.71661376953125E-4, 8.58306884765625E-5, 4.291534423828125E-5, 2.1457672119140625E-5, 1.0728836059570312E-5, 5.364418029785156E-6, 2.682209014892578E-6, 1.341104507446289E-6 ];
第三步：进入http://spatialreference.org/ref/sr-org/ 搜索你的空间参考系，找到相应的参考系，点击去，点击Proj4得到字符串
第四步：生成坐标参考系
var crs = new L.Proj.CRS('你的参考系', '第三步得到的字符串', { resolutions: 第二步得到的res, origin:第一步记下的origin值, }); 例如： var crs = new L.Proj.CRS('SR-ORG:7408', '+proj=longlat +ellps=GRS80 +no_defs', { resolutions: res, origin: [-180,90], });
第五步：生成地图
baselayer = L.esri.tiledMapLayer( {url: "http://192.168.1.156:6080/arcgis/rest/services/vec2/MapServer/"}); var res=[ 0.703125, // Level 0 0.3515625, // Level 1 0.17578125, // Level 2 0.087890625, // Level 3 0.0439453125, // Level 4 0.02197265625, 0.010986328125, 0.0054931640625, 0.00274658203125, 0.001373291015625, 6.866455078125E-4, 3.4332275390625E-4, 1.71661376953125E-4, 8.58306884765625E-5, 4.291534423828125E-5, 2.1457672119140625E-5, 1.0728836059570312E-5, 5.364418029785156E-6, 2.682209014892578E-6, 1.341104507446289E-6 ]; var crs = new L.Proj.CRS('SR-ORG:7408', '+proj=longlat +ellps=GRS80 +no_defs', { resolutions: res, origin: [-180,90], }); L.map('map', { center: new L.LatLng(26.565052,106.691417), zoom: 10, crs: crs, layers: [baselayer] });
第六步：生成地图渲染数据
var data={"max":108,"data":[{"x":104.54040688300006,"y":24.79143100700003,"value":83},{"x":104.81660000100004,"y":24.804038889000026,"value":98},.....] //数据过多只粘贴一部分
第七步：生成渲染函数
function rendererHeatMap(data){ var cfg = { "radius": 0.04, "maxOpacity": .8, "scaleRadius": true, "useLocalExtrema": true, latField: 'y', lngField: 'x', valueField: 'value' }; heatmapLayer = new HeatmapOverlay(cfg); map.addLayer(heatmapLayer); heatmapLayer.setData(data); }
第八步：调用渲染生成热力图
rendererHeatMap(data);
第九步：结果截图
项目结构：
完整代码：
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>heatmaptitle>
<link rel="stylesheet" href="lib/leaflet/leaflet.css">
<script src="lib/leaflet/leaflet.js">script>
<script src="lib/proj4-compressed.js">script>
<script src="lib/proj4leaflet.js">script>
<script src="lib/heatmap/heatmap.js">script>
<script src="lib/heatmap/leaflet-heatmap.js">script>
<script src="lib/leaflet/esri-leaflet.js">script>
head>
<body>
<div id="map" style="height: 900px;width: 900px;">div>
<script>
baselayer = L.esri.tiledMapLayer(
{url: "http://localhost:6080/arcgis/rest/services/vec2/MapServer/"});
var res=[
0.703125, // Level 0
0.3515625, // Level 1
0.17578125, // Level 2
0.087890625, // Level 3
0.0439453125, // Level 4
0.02197265625,
0.010986328125,
0.0054931640625,
0.00274658203125,
0.001373291015625,
6.866455078125E-4,
3.4332275390625E-4,
1.71661376953125E-4,
8.58306884765625E-5,
4.291534423828125E-5,
2.1457672119140625E-5,
1.0728836059570312E-5,
5.364418029785156E-6,
2.682209014892578E-6,
1.341104507446289E-6
];
var crs = new L.Proj.CRS('SR-ORG:7408',
'+proj=longlat +ellps=GRS80 +no_defs',
{
resolutions: res,
origin: [-180,90],
});
map=L.map('map', {
center: new L.LatLng(26.565052,106.691417),
zoom: 7,
crs: crs,
layers: [baselayer]
});
var data={"max":108,"data":[{"x":104.54040688300006,"y":24.79143100700003,"value":83},.....]; //数据过多只粘贴一部分
function rendererHeatMap(data){
var cfg = {
"radius": 0.2,
"maxOpacity": .8,
"scaleRadius": true,
"useLocalExtrema": true,
latField: 'y',
lngField: 'x',
valueField: 'value'
};
heatmapLayer = new HeatmapOverlay(cfg);
map.addLayer(heatmapLayer);
heatmapLayer.setData(data);
}
rendererHeatMap(data);
script>
body>
html>