First of all, please read the Writeup Formatting Tips - your post prior to editing was almost illegible and made your intent nearly impossible to discern. Now that we have covered that,

The Perl way of doing this would be a hash of hashes: 
my %error_per_file;
my %error_type;

while(my ($filename, $errnum) = get_row_elements($some,$params,$here))
+ {
    $error_type{$errnum}++;
    $error_per_file{$filename}->{$errnum}++;
}

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Substitute get_row_elements() with whatever delivers your colums. You then have all filenames as keys of the %error_per_file hash. The value will be a reference to a hash, whose keys in turn are the error numbers, and the values are the number of occurences of that error.

If all of that looks very strange, I suggest reading the perlreftut tutorial and perlref documentation to understand what's going on here.

Writing them back is a bit complicated:

my $column = 1;
my %column_for = map ($_ => $column++), sort keys %error_type;
$column_for{Filename} = 0;

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Now we have a hash whose keys are column headers and whose values are the corresponding column numbers. $worksheet->write(0, $column_for{$col_name}, $col_name) for keys %column_for; Here we have put the elements in their corresponding columns, at row 0 of the worksheet. Finally, we populate the rest of the rows, one at a time: 
my $row = 1;
for my $filename (sort keys %error_per_file){
    $worksheet->write($row, 0, $filename)
    my ($errnum, $occurences);
    $worksheet->write($row, $column_for{$errnum}, $occurences)
        while ($errnum, $occurences) = each %{$error_per_file{$filenam
+e}};
    ++$row;
}

[download]
____________
Makeshifts last the longest.

In reply to Re: perl and excel by Aristotle
in thread perl and excel by Sara

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