玫瑰風轉換的基點絲毫程度PHP

我做了一個腳本，以這種方式轉換成基點度在PHP中：玫瑰風轉換的基點絲毫程度PHP

<?php 
$deg = 0; 
$cardinal = null; 

$deg = str_replace(',','.',$argv[1]); 
echo "Degree: ". $deg ."\t"; 

if(($deg>=0 && $deg <= 11.25) || ($deg > 348.75 && $deg <= 360)){ $cardinal = 'N';} 
elseif($deg > 11.25 && $deg <= 33.75 ){ $cardinal = 'NNE';} 
elseif($deg > 33.75 && $deg <= 56.25 ){ $cardinal = 'NE';} 
elseif($deg > 56.25 && $deg <= 78.75 ){ $cardinal = 'ENE';} 
elseif($deg > 78.75 && $deg <= 101.25){ $cardinal = 'E';} 
elseif($deg > 101.25 && $deg <= 123.75){ $cardinal = 'ESE';} 
elseif($deg > 123.75 && $deg <= 146.25){ $cardinal = 'SE';} 
elseif($deg > 146.25 && $deg <= 168.75){ $cardinal = 'SSE';} 
elseif($deg > 168.75 && $deg <= 191.25){ $cardinal = 'S';} 
elseif($deg > 191.25 && $deg <= 213.75){ $cardinal = 'SSW';} 
elseif($deg > 213.75 && $deg <= 236.25){ $cardinal = 'SW';} 
elseif($deg > 236.25 && $deg <= 258.75){ $cardinal = 'WSW';} 
elseif($deg > 258.75 && $deg <= 281.25){ $cardinal = 'W';} 
elseif($deg > 281.25 && $deg <= 303.75){ $cardinal = 'WNW';} 
elseif($deg > 303.75 && $deg <= 326.25){ $cardinal = 'NW';} 
elseif($deg > 326.25 && $deg <= 348.75){ $cardinal = 'NNW';} 
else{ $cardinal = 'invalid';} 

echo "Cardinal point: ". $cardinal ."\n";

所以，我想：

`for i in $(seq 0 0.01 360);do php windrose.php $i;done`

這產生想要的結果：

Degree: 0.00 Cardinal point: N 
Degree: 0.01 Cardinal point: N 
Degree: 0.02 Cardinal point: N 
Degree: 0.03 Cardinal point: N 
... 
Degree: 11.24 Cardinal point: N 
Degree: 11.25 Cardinal point: N 
Degree: 11.26 Cardinal point: NNE 
Degree: 11.27 Cardinal point: NNE 
Degree: 11.28 Cardinal point: NNE 
... 
Degree: 33.74 Cardinal point: NNE 
Degree: 33.75 Cardinal point: NNE 
Degree: 33.76 Cardinal point: NE 
Degree: 33.77 Cardinal point: NE

所以我想：「這可能做得更好嗎？」有一個最簡單的方法來做到這一點？

來源

2017-06-02 Ivan Nack

不是我從開始的代碼，而是在我使用的庫中。

function windRose($item) { 
    $winddir[]="N"; 
    $winddir[]="NNE"; 
    $winddir[]="NE"; 
    $winddir[]="ENE"; 
    $winddir[]="E"; 
    $winddir[]="ESE"; 
    $winddir[]="SE"; 
    $winddir[]="SSE"; 
    $winddir[]="S"; 
    $winddir[]="SSW"; 
    $winddir[]="SW"; 
    $winddir[]="WSW"; 
    $winddir[]="W"; 
    $winddir[]="WNW"; 
    $winddir[]="NW"; 
    $winddir[]="NNW"; 
    $winddir[]="N"; 
    return $winddir[round($item*16/360)]; 
} 

echo windRose("220"); // returns SW

https://3v4l.org/X2JR9

來源

2017-06-02 12:37:40 Andreas

完美！幹得好 –

那是你在找什麼？我開始考慮是否這是問題的「循環」，所以我剛剛結束了這個：https://3v4l.org/brk9o – Andreas

@IvanNack如果答案是「正確的」，請接受答案。 – Andreas

玫瑰風轉換的基點絲毫程度PHP

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