Are you sure of your terminology? I may be wrong, but I understand imputation meaning filling in values for missing data, as opposed to excluding rows with missing data.

I like to filter data at the source.

use warnings;
use strict;
use Data::Dumper;

my @rows;
while (<DATA>) {
    my @row = grep { m/[012]/ } split ' ';
    push @rows, \@row if (scalar @row == 5);
}

print 'Results: ', Dumper(\@rows);

__DATA__
2 2 0 1 0
2 2 0 2 1
0 2 1 1 0
0 1 1 1 0
2 2 0 0 0
2 9 0 2 1
0 2 0 1 0
2 2 0 9 0

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But God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us. Romans 5:8 (NASB)

In reply to Re: Imputation of data by GotToBTru
in thread Imputation of data by garyboyd

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