OpenLayers功能未呈现

Question

I'm starting to play a bit with OpenLayers5 but I cannot even draw a simple point on the map. 我开始使用OpenLayers5但是我什至无法在地图上画一个简单的点。 I followed the tutorials and had a grasp at some of the examples but they always try to achieve more complex things that what I wanted to accomplish: Draw a single point on the map. 我按照教程学习并掌握了一些示例，但是它们始终尝试实现我想完成的更复杂的事情：在地图上画一个点。

I'm definitely missing something but I cannot see what it is. 我肯定会丢失某些东西，但看不到它是什么。 I created the map and added a VectorLayer with a VectorSource containing my single point to be drawn. 我创建了map并添加了一个VectorLayer和一个VectorSource其中包含要绘制的单点。 Yet nothing appears on the TilesLayer used as a base... 但是在用作基础的TilesLayer上没有任何显示...

Hints/Directions on what I'm missing are very much welcome :). 非常欢迎您提供有关我所缺少的提示： I'm sure I'm missing some small detail but I cannot overcome it. 我确定我缺少一些小细节，但我无法克服。

This is my JS file: 这是我的JS文件：

import 'ol/ol.css';
import {Map,View} from 'ol';
import TileLayer from 'ol/layer/Tile';
import VectorLayer from 'ol/layer/Vector';
import {fromLonLat} from 'ol/proj';
import Feature from 'ol/Feature';
import Point from 'ol/geom/Point';
import VectorSource from 'ol/source/Vector';
import OSM from 'ol/source/OSM';


document.addEventListener('DOMContentLoaded', initialize, false);



function initialize() {

  var mapCenter = [-5.93, 43.52]; // Long, lat
  var pointCoords = [-5.93, 43.52];

  var features = [
    new Feature(new Point(pointCoords))
  ];


  const map = new Map({
    target: 'mapCanvas',
    layers: [
     new TileLayer({
        source: new OSM()
      }),
      new VectorLayer({
        source: new VectorSource({
          features: features
        })
      })
    ],
    view: new View({
      center: fromLonLat(mapCenter),
      zoom: 12
    })
  });

}

And the simple HTML file: 和简单的HTML文件：

<!DOCTYPE html>
<html>

<head>
    <link rel="stylesheet" type="text/css" href="css/posiciones.css">


</head>

<body>
    <div id="mapCanvas"></div>
    <div id="sideMenu"></div>


    <script src="js/posiciones.js"></script>
</body>

Answer 1

You should transform the point coordinates from (Lon, Lat) to WebMercator via fromLatLon(pointCoords); 您应该通过fromLatLon(pointCoords);将点坐标从（Lon，Lat）转换为WebMercator fromLatLon(pointCoords); before creating the feature. 在创建功能之前。

OpenLayers功能未呈现

问题描述

1 个解决方案

解决方案1
0 已采纳 2018-12-26 15:11:21

OpenLayers功能未呈现

问题描述

1 个解决方案

解决方案1 0 已采纳 2018-12-26 15:11:21

解决方案1
0 已采纳 2018-12-26 15:11:21