I have the following code snippet: 
     $u15 = 15;
     $u105 = 105;
     $u25 = 25;
#
    for($k=0; $k<=12; $k++) {
        push  @biu_z, $u105 ;
     }
     for ($j=0; $j<=26; $j++) {
        push @biu_yz, [ @biu_z ];
     }
     for ($i=0; $i<=26; $i++) {
        push @biu, [ @biu_yz ];
     }
#
    for($k=0; $k<=12; $k++) {
        push  @zcu_z, $u15 ;
     }
     for ($j=0; $j<=26; $j++) {
        push @zcu_yz, [ @zcu_z ];
     }
     for ($i=0; $i<=25; $i++) {
        push @zcu, [ @zcu_yz ];
     }
#
#    problem ?
#
    for ($k=1; $k<=12; $k++) {
#
     for(my $i=1; $i<=5; $i++) {
               $biu[$i][4][$k] = $u25;
     }
     for(my $i=22; $i<=26; $i++) {
               $biu[$i][4][$k] = $u25;
     }
     for($i=1; $i<=4; $i++) {
               $biu[$i][23][$k] = $u25;
     }
     for($i=23; $i<=26; $i++) {
               $biu[$i][23][$k] = $u25;
     }
#
}

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The first part is just creating 3d arrays "biu(i,j,k)" and "ziu(i,j,k)" and setting all the entries to 105 and 15 respectively. If I leave out all the statements after the comment problem ?, it prints out the arrays just as I expected. However, I am trying to change certain array locations to different values, as in the statments following the problem ? statement. It changes all the $i values for $biu in the rows ($j=4 and $j=23) versus just the $i values in the for statements. I believe I am missing something big on the understanding of how arrays work in perl, as I am still thinking in fortran terms. Do I need to make all the $i into my $i ? Thanks in advance

In reply to Help with multi-dimensional arrays (list of lists) by pattobw

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