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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>链家可视化</title>
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>
<link rel="stylesheet" href="https://js.arcgis.com/4.2/esri/css/main.css">
<script src="https://js.arcgis.com/4.2/"></script>
<!--<link rel="stylesheet" href="http://localhost/jsapi/4.2/esri/css/main.css">-->
<!--<script src="http://localhost/jsapi/4.2/"></script>-->
<script>
require([
'esri/layers/FeatureLayer', 'esri/Graphic',
'esri/layers/support/LabelClass',
'esri/symbols/LabelSymbol3D',
'esri/symbols/TextSymbol3DLayer',
"esri/Map",
"esri/views/SceneView",
"esri/widgets/Search",
"esri/geometry/Point",
"esri/geometry/Polyline",
"esri/geometry/Polygon",
"esri/symbols/SimpleMarkerSymbol",
"esri/symbols/SimpleLineSymbol",
"esri/symbols/SimpleFillSymbol",
"esri/layers/GraphicsLayer",
'esri/config',
"dojo/dom",
"dojo/on", "esri/layers/MapImageLayer", "esri/renderers/SimpleRenderer",
"esri/symbols/PolygonSymbol3D",
"esri/symbols/ExtrudeSymbol3DLayer", "esri/layers/TileLayer", "esri/Basemap", "esri/WebMap",
"dojo/domReady!"
], function (FeatureLayer, Graphic, LabelClass, LabelSymbol3D, TextSymbol3DLayer, Map, SceneView, Search, Point, Polyline, Polygon, SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol, GraphicsLayer, esriConfig, dom, on, MapImageLayer, SimpleRenderer, PolygonSymbol3D, ExtrudeSymbol3DLayer, TileLayer, Basemap, WebMap) {
esriConfig.request.corsEnabledServers.push("server.arcgisonline.com");
graphicsLayer = new GraphicsLayer();
renderer = new SimpleRenderer({
symbol: new PolygonSymbol3D({
symbolLayers: [new ExtrudeSymbol3DLayer()]
}),
visualVariables: [{
type: "size",
field: "avgprice",
stops: [
{
value: 160,
size: 500
},
{
value: 4000,
size: 1500
}]
}, {
type: "color",
field: "unitprice",
stops: [
{
value: 18937.0,
color: [77, 247, 61]
},
{
value: 147247.0,
color: 'red'
}]
}]
});
var template = {
title: "小区名称: {name}",
content: "<ul><li>房源数量：{count}</li>"
+ "<li>总价平均：{avgprice} 万元</li>"
+ "<li>均价：{unitprice} 元/㎡</li>"
+ "<li>平均面积：{area} 平方米</li>"
+ "<li>平均关注者：{followers} 人</li>"
+ "<li>平均交易时间：{lasttrade} </li>" +
"</ul>",
fieldInfos: [{
fieldName: "name"
}, {
fieldName: 'count'
}, {
fieldName: 'avgprice'
}, {
fieldName: "unitprice"
}, {
fieldName: "area"
}, {
fieldName: "followers"
}, {
fieldName: "lasttrade"
}]
};
graphicsLayer.renderer = renderer
graphicsLayer.popupTemplate = template
map = new Map({
basemap: 'topo',
ground: "world-elevation",
layers: [graphicsLayer]
});
view = new SceneView({
map: map,
container: "viewDiv",
center: [116.3314279277704, 39.977584565],
zoom: 13
});
view.on('click', function (e) {
console.log(e)
})
var xhr = new XMLHttpRequest()
xhr.open('get', 'resblock.json')
xhr.onload = function () {
var result = JSON.parse(xhr.responseText)
var graphics_array = []
result.forEach(function (e) {
var g = new Graphic()
g.geometry = new Polygon(buildPolygonFromPt({
longitude: e[3] - 0.010875198921709739,
latitude: e[4] - 0.008736196697576304
}))
g.attributes = {
"count": e[1],
'avgprice': e[2],
'name': e[0],
'unitprice': e[5],
'area': e[6],
'followers': e[7],
'lasttrade': e[8]
};
graphics_array.push(g)
})
graphicsLayer.addMany(graphics_array)
}
xhr.send()
function buildPolygonFromPt(pt) {
var temp = {rings: [[]], spatialReference: {wkid: 4326}}
var step = 0.001
temp.rings[0].push([pt.longitude - step, pt.latitude - step])
temp.rings[0].push([pt.longitude - step, pt.latitude + step])
temp.rings[0].push([pt.longitude + step, pt.latitude + step])
temp.rings[0].push([pt.longitude + step, pt.latitude - step])
temp.rings[0].push([pt.longitude - step, pt.latitude - step])
return temp
}
});
</script>
</head>
<body>
<div id="viewDiv"></div>
</body>
</html>