Question

我有一个csv文件，其中包含地理名称和地理坐标。这是一个例子：

"Afghanistan","33 00 N","65 00 E"
"Akrotiri","34 37 N","32 58 E"
"Albania","41 00 N","20 00 E"
"Algeria","28 00 N","3 00 E"
"American Samoa","14 20 S","170 00 W"
"Andorra","42 30 N","1 30 E"
"Angola","12 30 S","18 30 E"
"Korea, North","40 00 N","127 00 E"
"Korea, South","37 00 N","127 30 E"

解剖第一行，我们有名称（阿富汗），纬度（33°00'N）和经度（65°00'E）。我正在寻找的结果如下：

"Afghanistan","33","65"
"Akrotiri","34.62","32.97"
"Albania","41","20"
"Algeria","28","3"
"American Samoa","-14.34","-170"
"Andorra","42.5","1.5"
"Angola","-12.5","18.5"
"Korea, North","40","127"
"Korea, South","37","127.5"

它只是携带整个度数，将分钟数加上小数（除以60和圆）并使用该字符决定结果值是正数（N，E）还是负数（S，W）。

度数纬度范围为0-90，
度经度范围为0-180和
分钟范围为0-59

我尝试了一套非常有限的正则表达式知识，但却失败了。我甚至没有接近有用的东西。

这就是为什么我转向你的正则大师，请与我分享你的一些知识。

谢谢

Answer 1

使用awk：

awk -F'",' '{
   gsub(/"/, "", $2);
   gsub(/"/, "", $3);
   split($2, a, " ");
   split($3, b, " ");
   s=a[3]=="N"? "":"-";
   t=b[3]=="E"? "":"-";
   printf "%s\",\"%s%.2f\",\"%s%.2f\"\n", 
       $1, s,(a[1]+a[2]/60), t,(b[1]+b[2]/60)
}' file

"Afghanistan","33.00","65.00"
"Akrotiri","34.62","32.97"
"Albania","41.00","20.00"
"Algeria","28.00","3.00"
"American Samoa","-14.33","-170.00"
"Andorra","42.50","1.50"
"Angola","-12.50","18.50"
"Korea, North","40.00","127.00"
"Korea, South","37.00","127.50"

将地理坐标转换为十进制值

1 个答案: