public static String dblToLocation(double data){
String ret_s = "";
int tmp_i_du = (int)data;
ret_s = String.valueOf(tmp_i_du)+"°";
//度小數部分
double tmp_d_du = data-tmp_i_du;
int tmp_i_fen = (int)(tmp_d_du*60);
ret_s = ret_s.concat(String.valueOf(tmp_i_fen)+"′");
double tmp_d_fen = tmp_d_du*60 - tmp_i_fen;
int tmp_i_miao = (int)(tmp_d_fen*60);
ret_s = ret_s.concat(String.valueOf(tmp_i_miao)+"″");
return ret_s;
}