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API地图坐标转化(批量转换坐标)

2024-04-27 14:23:16
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API地图坐标转化(批量转换坐标)

<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><script type="text/javascript" src="1.js"></script><title>批量转换坐标</title></head><body><input onclick="magic();" value="批量转换" type="button" />(据说有50次/秒的限制哦)<hr /><div style="clear:both"><div style="float:left;"><h4>谷歌地图</h4><div style="width:520px;height:340px;border:1px solid gray" id="map_canvas"></div><p>鼠标点击的谷歌坐标是:<span id="info"></span></p><script type="text/Javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script><script type="text/javascript">function initialize() {        var myOptions = {          zoom: 14,          center: new google.maps.LatLng(39.90861722866082, 116.39679921252446),          mapTypeId: google.maps.MapTypeId.ROADMAP        };        var map = new google.maps.Map(document.getElementById('map_canvas'),myOptions);        google.maps.event.addListener(map, 'click', function(e) {          document.getElementById("info").innerHTML = e.latLng;        });        var marker1 = new google.maps.Marker({          position: new google.maps.LatLng(39.90762965106183, 116.3786889372559),          map: map        });        var marker2 = new google.maps.Marker({          position: new google.maps.LatLng(39.90795884517671, 116.38632786853032),          map: map        });        var marker3 = new google.maps.Marker({          position: new google.maps.LatLng(39.907432133833574, 116.39534009082035),          map: map        });        var marker4 = new google.maps.Marker({          position: new google.maps.LatLng(39.90789300648029, 116.40624058825688),          map: map        });        var marker5 = new google.maps.Marker({          position: new google.maps.LatLng(39.90795884517671, 116.41413701159672),          map: map        });      }      google.maps.event.addDomListener(window, 'load', initialize);</script></div><div style="float:left;"><h4>百度地图</h4><div style="width:520px;height:340px;border:1px solid gray" id="container"></div><p>鼠标点击的百度坐标是:(<span id="info2"></span>)</p><script type="text/javascript" src="http://api.map.baidu.com/api?v=1.2"></script><script type="text/javascript">var map = new BMap.Map("container");map.centerAndZoom(new BMap.Point(116.404, 39.915), 15);var i;var markers = [];map.addEventListener("click",function(e){    document.getElementById("info2").innerHTML = e.point.lng + "," + e.point.lat;});//注意:百度和谷歌的经纬度坐标顺序是相反的。var points = [new BMap.Point(116.3786889372559,39.90762965106183),              new BMap.Point(116.38632786853032,39.90795884517671),              new BMap.Point(116.39534009082035,39.907432133833574),              new BMap.Point(116.40624058825688,39.90789300648029),              new BMap.Point(116.41413701159672,39.90795884517671)             ];function callback(xyResult){     if(xyResult.error != 0){return;}//出错就直接返回;    var point = new BMap.Point(xyResult.x, xyResult.y);    var marker = new BMap.Marker(point);    map.addOverlay(marker);    map.setCenter(point);// 由于写了这句,可以每一个被转的点都是中心点的过程}function magic(){    BMap.Convertor.transMore(points,2,callback);}</script></div></div></body></html>
//(function(){function load_script(xyUrl, callback){    var head = document.getElementsByTagName('head')[0];    var script = document.createElement('script');    script.type = 'text/javascript';    script.src = xyUrl;    //借鉴了jQuery的script跨域方法    script.onload = script.onreadystatechange = function(){        if((!this.readyState || this.readyState === "loaded" || this.readyState === "complete")){            callback && callback();            // Handle memory leak in IE            script.onload = script.onreadystatechange = null;            if ( head && script.parentNode ) {                head.removeChild( script );            }        }    };    // Use insertBefore instead of appendChild  to circumvent an IE6 bug.    head.insertBefore( script, head.firstChild );}function transMore(points,type,callback){    for(var index in points){        if(index > 50){return;}        var xyUrl = "http://api.map.baidu.com/ag/coord/convert?from=" + type +         "&to=4&x=" + points[index].lng + //这里要循环读入数组points的lng数据,直到points.length完毕。        "&y=" + points[index].lat +         "&callback=callback";        //动态创建script标签        load_script(xyUrl);    }}window.BMap = window.BMap || {};BMap.Convertor = {};BMap.Convertor.transMore = transMore;})();

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