如何将这些坐标转换为谷歌地图可读坐标?

时间:2009-10-13 13:12:41

标签: php google-maps coordinate-systems

大家好我需要转换以下形式的坐标:

N42-53.9° 
W072-16.2°

INto有点类似于以下内容:

-90.7311
0.346944

非常感谢php函数 - 或者只是公式也足够好:)。

2 个答案:

答案 0 :(得分:2)

我找到了online JS calculatorPHP solution

<?php
function DMStoDEC($deg,$min,$sec)
{
// Converts DMS ( Degrees / minutes / seconds ) 
// to decimal format longitude / latitude

    return $deg+((($min*60)+($sec))/3600);
}    

function DECtoDMS($dec)
{
// Converts decimal longitude / latitude to DMS
// ( Degrees / minutes / seconds ) 

// This is the piece of code which may appear to 
// be inefficient, but to avoid issues with floating
// point math we extract the integer part and the float
// part by using a string function.

    $vars = explode(".",$dec);
    $deg = $vars[0];
    $tempma = "0.".$vars[1];

    $tempma = $tempma * 3600;
    $min = floor($tempma / 60);
    $sec = $tempma - ($min*60);

    return array("deg"=>$deg,"min"=>$min,"sec"=>$sec);
}    
?> 

答案 1 :(得分:0)

用简单的数学做到这一点:

arcsecond is 1⁄3,600 of a degree
arcminute is 1/60 of a degree

S,E negative, N,W positive

example: S 23° 25' 33.8: -1 * 23+25/60+33.8/3600 = -23,426055555555555555555555555556°