As an aside note, you could make some of your code look more Perl-ish. For example, instead of C-style "for" loops, you could take advantage of Perl's Range Operator (see perlop) by changing this: 
$j=0;
for ($j=0;$j<=16381;$j++){
    if (defined($counts_rebin[$j])){
    next;
    }
    else{
    $counts_rebin[$j]=0;
    }
}

[download]

into this: 

for my $j (0..16381) {
    $counts_rebin[$j] = 0 unless defined $counts_rebin[$j];
}

[download]

You could even take things a step further and employ map to initialize the @energy_rebin array by changing this: 

for ($i=0; $i<16834; $i++){
$energy_rebin[$i] = ($rebin_width * $i);
}

[download]

into this: 

my @energy_rebin = map { $_ * $rebin_width } (0..16833);

[download]

In reply to Re: Spurious `undefined' values and conversion issues by toolic
in thread Spurious `undefined' values and conversion issues by sf_ashley

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