WebGis開發過程中不同座標系之間的轉換----底圖使用Web墨卡託
web 墨卡託和經緯度投影轉化的程式碼
/**
* 經緯度座標轉Web墨卡託座標
* @param lat
* @param lon
* @return
*/
public static double [] lonLat2Mercator(double lat,double lon){
double [] xy = new double[2];
double x = lon * 20037508.342789 / 180;
double y = Math.log(Math.tan((90+lat)*Math.PI/360))/(Math.PI/180);
y = y * 20037508.342789 / 180;
xy[0] = x;
xy[1] = y;
return xy;
}
/**
* Web墨卡託座標轉經緯度
* @param mercatorX
* @param mercatorY
* @return
*/
public static double [] mercator2lonLat(double mercatorX,double mercatorY ){
double [] xy = new double[2];
double x = mercatorX/20037508.342789*180;
double y = mercatorY/20037508.342789*180;
y = 180 /Math.PI*(2*Math.atan(Math.exp(y*Math.PI/180))-Math.PI/2);
xy[0] = x;
xy[1] = y;
return xy;
}
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原文：https://blog.csdn.net/liuxu841911548/article/details/78569519