note flexvault <p><a href="http://www.perlmonks.org/?node_id=873192">oxydeepu</a>,</p> <p>Like everyone else, it is hard to understand the math. But your original question can be answered by reading the file one line at a time, do a 'chomp' and then 'split' the line into 2 strings. Then using a hash, populate it with keys and values where the value is greater than 4.</P><p> Now you can process your hash using a 'foreach' with a numeric 'sort' of the 'keys' of the hash, and use whatever Perl math code you want to get whatever results you want.</p><p> Like all things in Perl, this is one of many ways to do it, so experiment. </p> <p>Good Luck</p> <div class="pmsig"><div class="pmsig-733061"> <p><b>"Well done is better than well said." - Benjamin Franklin</b></p> </div></div> 1015288 1015288