if you want to use the names of the fields instead of the position, why not use an array of hash-references for each row? simply modify your code to split the header row into an array of keys, then read each row or data and map the values to the keys. if you do everything correctly, you would be able to extract what you want using something like

my @data = grep {$_->{bmi} > 40 && $_->bpi > 135 && $_->{sex} eq 'F'} @patients

$,=qq.\n.;print q.\/\/____\/.,q./\ \ / / \\.,q.    /_/__.,q..
Happy, sober, smart: pick two.

In reply to Re: how to extract data from an array using a condition by xyzzy
in thread how to extract data from an array using a condition by kayj

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