OpenLayers创建地图
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=UTF-8″>
<title>Insert title here</title>
<link rel=”stylesheet” href=”skin.css” type=”text/css”>
<script src=”../lib/OpenLayers.js”></script>
<script type=”text/javascript”>
var map = null;
function init(){
var options = {
controls:[new OpenLayers.Control.KeyboardDefaults]
};
map = new OpenLayers.Map(“map”,options);
var wms = new OpenLayers.Layer.WMS(“LayerName”,”http://vmap0.tiles.osgeo.org/wms/vmap0?”,{layers:”basic”});
map.addLayer(wms);
map.zoomToMaxExtent();
}
</script>
</head>
<body onload=”init()”>
<div id=”map” class=”smallmap”></div>
</body>
</html>
代码中的div为显示地图的容器，地图要加载到哪个容器中所用方式为map = new OpenLayers.Map(“map”,options)，这里的map为容器的id，options为地图参数。
map的定义方式有以下几种方式：
// create a map with default options in an element with the id “map1”
var map = new OpenLayers.Map(“map1”);
// create a map with non-default options in an element with id “map2”
var options = {
maxExtent: new OpenLayers.Bounds(-200000, -200000, 200000, 200000),
maxResolution: 156543,
units: ‘m’,
projection: “EPSG:41001”
};
var map = new OpenLayers.Map(“map2”, options);
// map with non-default options – same as above but with a single argument
var map = new OpenLayers.Map({
div: “map_id”,
maxExtent: new OpenLayers.Bounds(-200000, -200000, 200000, 200000),
maxResolution: 156543,
units: ‘m’,
projection: “EPSG:41001”
});
// create a map without a reference to a container – call render later
var map = new OpenLayers.Map({
maxExtent: new OpenLayers.Bounds(-200000, -200000, 200000, 200000),
maxResolution: 156543,
units: ‘m’,
projection: “EPSG:41001”
});
转载自：https://blog.csdn.net/iteye_11116/article/details/82617390
