基于vue+openlayer实现地图聚合和撒点效果
作者:Ponnenult
Openlayers 是一个模块化、高性能并且功能丰富的WebGIS客户端的JavaScript包,用于显示地图及空间数据,并与之进行交互,具有灵活的扩展机制,本文给大家介绍vue+openlayer实现地图聚合效果和撒点效果,感兴趣的朋友一起看看吧
前言:
openlayer是目前我们gis常用的一款开源的,并且反馈都特别好的软件了,像之前的ol3, 风靡一时,地图实现也很简单,很实用,目前vue中使用地图也是非常多的,那么如果在vue中引入openlayer并且实现地图撒点效果,甚至是更深层的地图聚合效果呢,本文来分享下vue中地图的实现。目前openlayer的 5 系列,6.5 都是通用的,经测试可用。
实现效果:
1、聚合效果:
2、撒点效果:
具体实现步骤:
1、项目中引入openlayer
cnpm i ol --save
2、配置(按需引入)
(1)新建一个vue文件
(2)template
<div id="map"></div>
(3)js部分
引入相关配置文件,这是我的所有引入,你可以根据你的情况删一删
import "ol/ol.css"; import View from "ol/View"; import Map from "ol/Map"; import TileLayer from "ol/layer/Tile"; import Overlay from "ol/Overlay"; import XYZ from "ol/source/XYZ"; import { Vector as SourceVec ,Cluster } from "ol/source"; import { Feature } from "ol"; import { Vector as LayerVec , Vector as VectorLayer } from "ol/layer"; import { Point, LineString } from "ol/geom"; import { Style, Icon, Fill, Stroke, Text, Circle as CircleStyle, } from "ol/style"; import { OSM, TileArcGISRest } from "ol/source";
3、实现地图展示
mounted:
mounted() { this.initMap(); },
methods:我这里提供了两种地图的模板,都是在线的,内网的话换成你自己的地址
initMap(){ //渲染地图 var layers = [ //深蓝色背景 new TileLayer({ source: new XYZ({ url: "https://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}", }), }), //初始化背景 // new TileLayer({ // source: new OSM(), // }), ]; this.map = new Map({ layers: layers, target: "map", view: new View({ projection: 'EPSG:4326', center: [120, 30], zoom: 10, minZoom: 5, maxZoom: 14 }), }); //点击提示当前的坐标 this.map.on( "click", function (evt) { alert(evt.coordinate[0] + ";" + evt.coordinate[1]); }, map ); }
4、撒点功能
mounted:
mounted() { this.initMap(); },
methods:
initMap(){ //渲染地图 var layers = [ //深蓝色背景 // new TileLayer({ // source: new XYZ({ // url: // "https://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}", // }), // }), //初始化背景 new TileLayer({ source: new OSM(), }), ]; this.map = new Map({ layers: layers, target: "map", view: new View({ projection: 'EPSG:4326', center: [120, 30], zoom: 10, minZoom: 5, maxZoom: 14 }), }); //点击提示当前的坐标 this.map.on( "click", function (evt) { alert(evt.coordinate[0] + ";" + evt.coordinate[1]); }, map ); //我这里是写的固定数据点,所以可以直接渲染完地址直接调用 this.addMarker() }, addMarker(){ //创建画板 let sourceArr = new SourceVec({}); //定义随机数据,这里随机了200个 for (var i = 1; i <= 200; i++) { //点的坐标信息 let coordinates = [120.00 + Math.random(), 30.00 + Math.random()]; let feature = new Feature(new Point(coordinates)); let markerStyle = new Style({ image: new Icon({ opacity: 0.75, src: this.fixedStationImg1, }), }) feature.setStyle(markerStyle) sourceArr.addFeature(feature); } //LayerVec /VectorLayer 这两种都可以 var layer = new VectorLayer({ source: sourceArr, }) //地图添加画板 this.map.addLayer( layer ); }
5、聚合效果
mounted:
mounted() { this.initMap(); },
methods:
initMap(){ //渲染地图 var layers = [ //深蓝色背景 // new TileLayer({ // source: new XYZ({ // url: // "https://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}", // }), // }), //初始化背景 new TileLayer({ source: new OSM(), }), ]; this.map = new Map({ layers: layers, target: "map", view: new View({ projection: 'EPSG:4326', center: [120, 30], zoom: 10, minZoom: 5, maxZoom: 14 }), }); //点击提示当前的坐标 this.map.on( "click", function (evt) { alert(evt.coordinate[0] + ";" + evt.coordinate[1]); }, map ); //我这里是写的固定数据点,所以可以直接渲染完地址直接调用 this.addMarker() }, addMarker(){ //创建画板 let sourceArr = new SourceVec({}); //定义随机数据,这里随机了200个 for (var i = 1; i <= 200; i++) { //点的坐标信息 let coordinates = [120.00 + Math.random(), 30.00 + Math.random()]; let feature = new Feature(new Point(coordinates)); let markerStyle = new Style({ image: new Icon({ opacity: 0.75, src: this.fixedStationImg1, }), }) feature.setStyle(markerStyle) sourceArr.addFeature(feature); } //添加进map层-聚合点-LayerVec /VectorLayer 这两种都可以 var layer = new LayerVec({ source: this.ClusterSource, style: function (feature, resolution) { var size = feature.get('features').length; //如果是聚合数为1也就是最底层的则是定位图标 if (size == 1) { return new Style({ image: new Icon({ anchor: [0.5, 1], src: require("../../assets/Img/marker_yes.png"), }) }) }else { //这里设置聚合部分的样式 return new Style({ image: new CircleStyle({ radius: 30, stroke: new Stroke({ color: 'white' }), fill: new Fill({ color: 'blue' }) }), text: new Text({ text: size.toString(), fill: new Fill({ color: 'white' }) }) }) } } }) //地图添加画板 this.map.addLayer( layer ); }
参考文献:
js中使用openlayer: https://blog.csdn.net/HerryDong/article/details/110951955
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