At 8:03 PM -0600 3/20/11, Chris Stinemetz wrote:
Jim,

Thanks for your feedback. I am actually trying to sum up all rlptxat elements that have the same cell, sect, and chan elements in the array. I hope this clarifies.

No, it doesn't. What is a "rlptxat" element? Where do they come from.

You can define a multiple-level hash with three nested keys (cell, sect, chan) to hold the sum of all elements with the same key values (a triple):

  my %sum;

Find values of cell, sect, and chan:

$cell = ?
$sect = ?
$chan = ?

Add the value with these keys to the sum:

  $sum{$cell}{$sect}{$chan} += ?

Iterate over the result:

  for my $cell ( sort keys %sum ) {
    for my $sect ( sort keys %{$sum{$cell}} ) {
      for my $chan ( sort keys %{$sum{$cell}{$sect}} ) {
print "Value of sum($cell,$sect,$chan) is $sum{$cell}{$sect}{$chan}\n";
      }
    }
  }

Good luck!

--
Jim Gibson
j...@gibson.org

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