Counting the differences based on a specific rule

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09-08-2008

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Welp, my original proposal was to just collect the @differences, then at the end sort it and loop over it.

Code:

my %limits = (100 => "< 100",
  200 => "100 - 200",
  500 => "201 - 500",
  750 => "501 - 750",
  1000 => "751 - 1000",
  1_000_000_000 => "> 1001");
my @l = sort keys %limits;
my $total = 0;
print "\nDistribution:\n";
for my $d (sort @differences) {
  if ($d < $l[0]) {
    $total++;
    next;
  }
  print $limits{$l[0]}, "\t-\t", $total, "\n";
  shift @l;
}
print $limits{$l[0]}, "\t-\t", $total, "\n";

(Not tested.)

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mincdiff

MINCDIFF(1)							 MINC User's Guide						       MINCDIFF(1)

NAME

       mincdiff - report differences between minc files

SYNOPSIS

       mincdiff [-header|-body] [-l] [diff options] file1 file2

DESCRIPTION

       The  mincdiff  shell  script compares two minc files by running diff(1) on the headers of the two minc files, and cmp(1) on the image vari-
       able.  You can view only the header differences using -header or only the body (image variable) differences using -body.  The option -l	is
       passed on to cmp of the image variable.	Any unrecognized options (e.g. -u) are passed verbatim to the diff of the headers.

OPTIONS

       -header Compare only the headers of the two files.

       -body Compare only the image data of the two files.

       -l Print the byte offset in decimal and the byte value in octal
	      for each difference encountered in the image variable.

AUTHOR

       Peter Neelin

COPYRIGHTS

       Copyright (C) 1993 by Peter Neelin

SEE ALSO

       diff(1), cmp(1).

							   $Date: 2004-05-20 21:52:08 $ 					       MINCDIFF(1)

Shell Programming and Scripting