Yet another way to get the canonical coordinate spec: 
my ($num1x, $num2x) = sort {$a <=> $b} ($1, $3);
my ($num1y, $num2y) = sort {$a <=> $b} ($2, $4);

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In reply to Re: Extraction of List of Coordinates by Roy Johnson
in thread Extraction of List of Coordinates by EchoAngel

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