A little different approach using a two-dimensional array...

# using two dimensional array
# assumes sequence of records is always N...E...U...
use strict;
use warnings;

my @station;
my $row = -1;
my $col = 0;

print "STATION\tN\tE\tU\n";

while (<DATA>) {
   if ($_ =~ /^(\w\w+)\s+..*$/) {
      $col = 0;
      $station[++$row][$col] = $1;
   }
   elsif ($_ =~ /^[N|E|U]\s+(\d+)$/) {
      $station[$row][++$col] = $1;
   }
}

for(my $i = 0; $i <= $row; $i++) {
   for(my $j = 0; $j <= $col; $j++) {
      if($j > 0) {
         print "\t";
      }
      print"$station[$i][$j]";
   }
   print "\n";
}

__DATA__
GRAZ X 4
Y 6
Z 3
N 22
E 3
U 15


KIGB X 2
Y 6
Z 6
N 13
E 20
U 11

[download]

Output:

STATION N       E       U
GRAZ    22      3       15
KIGB    13      20      11

[download]

In reply to Re: Extract data from next n-th line by dineed
in thread Extract data from next n-th line by kana

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.