本文介绍了一种将GPS坐标转换为百度地图坐标的实现方案。通过使用百度地图API，该示例展示了如何加载地图、设置中心点及缩放级别，并在地图上标记GPS位置。此外，还实现了坐标转换后的标记及地址解析。
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak= "></script>
<title>GPS转百度</title>
<script src="jquery.min.js"></script>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
// 百度地图API功能
//GPS坐标
var x = 121.575524;
var y = 31.20961;
var ggPoint = new BMap.Point(x,y);
var SAMPLE_ADVANCED_POST = "http://api.map.baidu.com/geocoder/v2/?ajax=true&ak=";
//地图初始化
var bm = new BMap.Map("allmap");
bm.centerAndZoom(ggPoint, 15);
bm.addControl(new BMap.NavigationControl());
//添加gps marker和label
var markergg = new BMap.Marker(ggPoint);
bm.addOverlay(markergg); //添加GPS marker
var labelgg = new BMap.Label("未转换的GPS坐标（错误）",{offset:new BMap.Size(20,-10)});
markergg.setLabel(labelgg); //添加GPS label
//坐标转换完之后的回调函数
translateCallback = function (data){
alert("纬度："+data.points[0].lat+"经度："+data.points[0].lng);
if(data.status === 0) {
var marker = new BMap.Marker(data.points[0]);
var location = data.points[0].lat + "," + data.points[0].lng;
var data = {
"location":location,
"output":'json',
"pois":0
};
$.ajax({
url: SAMPLE_ADVANCED_POST,
data: data,
dataType:'JSONP',
type: "post",
async: false,
success: function(obj){
alert("你好");
autoLocated = true;
var city = obj.result.addressComponent.city;
if(city.indexOf("市") > 0){
city = city.substring(0,city.indexOf("市"));
alert(city);
}
},
error: function(){
alert("获取失败");
}
});
bm.addOverlay(marker);
var label = new BMap.Label("转换后的百度坐标（正确）",{offset:new BMap.Size(20,-10)});
marker.setLabel(label); //添加百度label
bm.setCenter(data.points[0]);
}
}
setTimeout(function(){
var convertor = new BMap.Convertor();
var pointArr = [];
pointArr.push(ggPoint);
convertor.translate(pointArr, 1, 5, translateCallback)
}, 1000);
</script>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" name="viewport" id="viewport">
<meta content="telephone=no" name="format-detection">
<style type="text/css">
body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak= "></script>
<title>GPS转百度</title>
<script src="jquery.min.js"></script>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
// 百度地图API功能
//GPS坐标
var x = 121.575524;
var y = 31.20961;
var ggPoint = new BMap.Point(x,y);
var SAMPLE_ADVANCED_POST = "http://api.map.baidu.com/geocoder/v2/?ajax=true&ak=";
//地图初始化
var bm = new BMap.Map("allmap");
bm.centerAndZoom(ggPoint, 15);
bm.addControl(new BMap.NavigationControl());
//添加gps marker和label
var markergg = new BMap.Marker(ggPoint);
bm.addOverlay(markergg); //添加GPS marker
var labelgg = new BMap.Label("未转换的GPS坐标（错误）",{offset:new BMap.Size(20,-10)});
markergg.setLabel(labelgg); //添加GPS label
//坐标转换完之后的回调函数
translateCallback = function (data){
alert("纬度："+data.points[0].lat+"经度："+data.points[0].lng);
if(data.status === 0) {
var marker = new BMap.Marker(data.points[0]);
var location = data.points[0].lat + "," + data.points[0].lng;
var data = {
"location":location,
"output":'json',
"pois":0
};
$.ajax({
url: SAMPLE_ADVANCED_POST,
data: data,
dataType:'JSONP',
type: "post",
async: false,
success: function(obj){
alert("你好");
autoLocated = true;
var city = obj.result.addressComponent.city;
if(city.indexOf("市") > 0){
city = city.substring(0,city.indexOf("市"));
alert(city);
}
},
error: function(){
alert("获取失败");
}
});
bm.addOverlay(marker);
var label = new BMap.Label("转换后的百度坐标（正确）",{offset:new BMap.Size(20,-10)});
marker.setLabel(label); //添加百度label
bm.setCenter(data.points[0]);
}
}
setTimeout(function(){
var convertor = new BMap.Convertor();
var pointArr = [];
pointArr.push(ggPoint);
convertor.translate(pointArr, 1, 5, translateCallback)
}, 1000);
</script>
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