You are getting bit by context: $bin_file_data{$sampname} is a scalar, and an array in scalar context returns the length of the array. What you mean to do is store a reference to an array: 
        $bin_file_data{$sampname} = \@bindata;

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See perlref, perlreftut and/or perllol for more guidance.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: Creating Hash of Arrays by kennethk
in thread Creating Hash of Arrays by GeneGeek

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