I found the code a bit confusing, but I think what is happenning is that you are creating an array that maps a distance from the centre to a record -- but you don't account for the possibility of two records with the same distance.

The approach you probably want to use is to create a reshref for each record, and then sort those by distance. i.e. 

while (<LINE>) {
  @fields = split;
  my $record = {
    ra => ...,
    prob => ...,
    dist => ...,
  };
  push @records, $record;
}
sub by_distance { $a->{dist} <=> $b->{dist} }
@records = sort by_distance @records;

[download]

You can then iterate ocver the records, and print them.

--Dave
Opinions my own; statements of fact may be in error.

In reply to Re: sorting/output by dpuu
in thread sorting/output by srkaeppler

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