Along the same lines, you could always simply sort the different lines into two different output files if you are worried about record keeping. For instance, once you decide how you want to filter/screen the data (probably by one of the methods discussed in the previous posts) you could put a simple if-else check to send the 'consistent' data lines to a file named "good_data.csv" and the 'inconsistent' data lines to a file named "discarded_data.csv" (or whichever names you like) so that you can review the discarded data at a later time if need be, or recover any lines that were filtered incorrectly. This also might help you find any errors or bugs in you code later on as you test it more thoroughly.

I am thinking something along these lines (pseudocode) (in case you aren't terribly familiar with syntax):

open INPUT, "name_of_input_file" or die: $!;
open GOOD_OUTPUT, ">good_data.csv" or die $!;
open BAD_OUTPUT, ">discarded_data.csv" or die $!;

while(my $line = <INPUT>){
    chomp $line;
    if(data_meets_good_condition){
        print GOOD_OUTPUT "$line\n"; 
    }else{
        print BAD_OUTPUT "$line\n";
    }
}

[download]

That's a little rudimentary (and verbiose if you are a fan of golf) and needs an appropriate logical check in the if condition, but the primary idea is the if-else check, that way you don't totally wipe data by accident. Again, in terms of filtering the data, some of the methods discussed above are probably better.

In reply to Re^2: Remove array if data inconsistent by BJ_Covert_Action
in thread Remove array if data inconsistent by meredib

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.