# 【百度地图API】如何批量转换为百度经纬度

百度地图API的官网上提供了常用坐标转换的示例。但是，一次只能转换一个，真的非常麻烦！！这里结合了官方的示例，自制一个批量转换工具，供大家参考。

------------------------------------------------------------------------------------------

new google.maps.LatLng(39.90762965106183, 116.3786889372559)

new BMap.Point(116.3786889372559,39.90762965106183)

//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)             ];

BMap.Convertor.transMore(points,2,callback);

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);    }}

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}

---------------------------------------------------------------------------------------------

google.maps.event.addListener(map, 'click', function(e) {          alert(e.latLng);        });

map.addEventListener("click",function(e){    alert(e.point.lng + "," + e.point.lat);});

----------------------------------------------------------------------------------------

<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><script type="text/javascript" src="changeMore.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>

changeMore.js
//2011-7-25 zhangying(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;})();

|
1月前
|

87 0
|
1月前
|

Python加百度语音API实现文字转语音功能
Python加百度语音API实现文字转语音功能
49 0
|
3月前
|
JSON JavaScript 定位技术
Vue中使用echarts@4.x中国地图及AMap相关API的使用
Vue中使用echarts@4.x中国地图及AMap相关API的使用
138 0
|
4月前
|
SQL 存储 DataWorks
DataWorks中API、desc、数据地图，这3个怎么对起来？
DataWorks中API、desc、数据地图，这3个怎么对起来？
39 0
|
4月前
|

75 1
|
4月前
|

129 0
|
5月前
|

35 0
|
5月前
|

31 0
|
API 定位技术 Android开发

Import import com.baidu.mapapi.CoordinateConvert;import com.baidu.mapapi.GeoPoint; Code GeoPoint p = new GeoPoint(x, y);GeoPoint p2 = CoordinateConvert.
667 0
|
7天前
|

API接口封装系列
API（Application Programming Interface）接口封装是将系统内部的功能封装成可复用的程序接口并向外部提供，以便其他系统调用和使用这些功能，通过这种方式实现系统之间的通信和协作。下面将介绍API接口封装的一些关键步骤和注意事项。
17 2