My Dearest Monks,

I 

use Statistics::LineFit;

[download]
in the context of 
sub correlation {

  my ($x_ref, $y_ref) = @_;
  
  my $output = "output_test.txt";

  open (OUTPUT_TEST, ">$output");

  print OUTPUT_TEST Dumper ($x_ref, $y_ref);

  #print Dumper length($x_ref);
  #print Dumper length($y_ref);

  my $lfit = Statistics::LineFit->new();
  $lfit->setData($x_ref, $y_ref);
  
  my ($intercept, $slope) = $lfit->coefficients();
  my $rSquared = $lfit->rSquared();
  
  my $hashref = {
         a => $intercept, 
         b => $slope, 
         c => $rSquared
        };

  return $hashref;

}

[download]
Is there a quick and easy way for me to return all the points that exist above the trend line and all the points that exist below the trend line as two seperate groups (in two arrays).

In reply to Cluster points above and below trendline with use Statistics::LineFit; by Win

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