gps坐标转换成火星坐标（能搜到这个标题就找对了）
1、上一篇文章写了怎么申请key,直接上代码‘
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>GPS to GCJ-02 Demo</title>
<!-- 引入高德地图API -->
<script src="https://webapi.amap.com/maps?v=1.4.15&key=你的key"></script>
<style>
#map {
width: 100%;
height: 1000px;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var GPS = {
PI: 3.14159265358979324,
delta: function (lat, lon) {
var a = 6378245.0; // 卫星椭球坐标投影到平面地图坐标系的投影因子
var ee = 0.00669342162296594323; // 椭球的偏心率
var dLat = this.transformLat(lon - 105.0, lat - 35.0);
var dLon = this.transformLon(lon - 105.0, lat - 35.0);
var radLat = lat / 180.0 * this.PI;
var magic = Math.sin(radLat);
magic = 1 - ee * magic * magic;
var sqrtMagic = Math.sqrt(magic);
dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * this.PI);
dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * this.PI);
return {'lat': dLat, 'lon': dLon};
},
gps84_To_Gcj02: function (lat, lon) {
if (this.outOfChina(lat, lon)) {
return {lat: lat, lon: lon};
}
var d = this.delta(lat, lon);
return {lat: lat + d.lat, lon: lon + d.lon};
},
outOfChina: function (lat, lon) {
return (lon < 72.004 || lon > 137.8347 || lat < 0.8293 || lat > 55.8271);
},
transformLat: function (x, y) {
var ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(y * this.PI) + 40.0 * Math.sin(y / 3.0 * this.PI)) * 2.0 / 3.0;
ret += (160.0 * Math.sin(y / 12.0 * this.PI) + 320 * Math.sin(y * this.PI / 30.0)) * 2.0 / 3.0;
return ret;
},
transformLon: function (x, y) {
var ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(x * this.PI) + 40.0 * Math.sin(x / 3.0 * this.PI)) * 2.0 / 3.0;
ret += (150.0 * Math.sin(x / 12.0 * this.PI) + 300.0 * Math.sin(x / 30.0 * this.PI)) * 2.0 / 3.0;
return ret;
}
};
// 示例GPS坐标 (WGS-84)
var gpsLat = 31.2412402272; // 纬度
var gpsLon = 121.473992206; // 经度
// 将GPS坐标转换为GCJ-02(火星坐标系)
var gcj02Point = GPS.gps84_To_Gcj02(gpsLat, gpsLon);
// 初始化高德地图
var map = new AMap.Map('map', {
center: [gcj02Point.lon, gcj02Point.lat], // 使用转换后的火星坐标
zoom: 14
});
// 添加标记
var marker = new AMap.Marker({
position: [gcj02Point.lon, gcj02Point.lat]
});
map.add(marker);
</script>
</body>
</html>
记得换key
原文地址：https://blog.csdn.net/apple_70049717/article/details/142827441
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