我想使用 OpenStreetMap 使用图书馆开放层向我的网站显示 map 。
当我想添加标记时，我想添加一个标记，但该标记没有显示在 map 上。
我在谷歌上搜索过，我在我的代码下面找到了一个代码。
有很多例子可以添加标记，但它主要用于谷歌 map ，我想使用开源 map
<!doctype html>
<html lang="en">
<head>
<link rel="stylesheet"
href="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/ css/ol.css" type="text/css">
<style>
.map {
height: 400px;
width: 100%;
}
</style>
<script src="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script>
<title>OpenLayers example</title>
</head>
<body>
<h2>My Map</h2>
<div id="map" class="map"></div>
<script type="text/javascript">
///SHOW MAP
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
})
],
view: new ol.View({
center: ol.proj.fromLonLat([106.8478695, -6.1568562]),
zoom: 17
})
});
///ADD MARKER
var markers = new OpenLayers.Layer.Markers( "Markers" );
map.addLayer(markers);
var size = new OpenLayers.Size(21,25);
var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
var icon = new OpenLayers.Icon('marker.png', size, offset);
markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695,-6.1568562),icon));
markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695,-6.1568562),icon.clone()));
</script>
</body>
</html>
代码片段:
///SHOW MAP
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
})
],
view: new ol.View({
center: ol.proj.fromLonLat([106.8478695, -6.1568562]),
zoom: 17
})
});
///ADD MARKER
var markers = new OpenLayers.Layer.Markers("Markers");
map.addLayer(markers);
var size = new OpenLayers.Size(21, 25);
var offset = new OpenLayers.Pixel(-(size.w / 2), -size.h);
var icon = new OpenLayers.Icon('marker.png', size, offset);
markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695, -6.1568562), icon));
markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695, -6.1568562), icon.clone()));.map {
height: 400px;
width: 100%;
}<link rel="stylesheet" href="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/ css/ol.css" type="text/css">
<script src="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script>
<title>OpenLayers example</title>
<h2>My Map</h2>
<div id="map" class="map"></div>我希望标记出现在 map 上，但我没有看到标记
最佳答案
您正在使用 OpenLayers 2 代码向 OpenLayers 5 map 添加标记。
OpenLayers 3/4/5 的等效代码是
var markers = new ol.layer.Vector({
source: new ol.source.Vector(),
style: new ol.style.Style({
image: new ol.style.Icon({
anchor: [0.5, 1],
src: 'marker.png'
})
})
});
map.addLayer(markers);
var marker = new ol.Feature(new ol.geom.Point(ol.proj.fromLonLat([106.8478695, -6.1568562])));
markers.getSource().addFeature(marker);
关于openlayers - 如何添加标记以打开图层 map ？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55789146/