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Sorting Question

adamjazz1
Novice

Dec 3, 2009, 12:20 PM

Post #1 of 5 (1510 views)

Sorting Question	Can't Post

Hi everyone,

I have a quick question on sorting.

Code

/yellow/3/sim/t2.pdf 1.299149 
/yellow/5/sim/t3.pdf 0.522122 
 
I would like to sort this data ascending numerically.  
 
So far I have this: 
my @data= split(/\d\.\d+); 
@srt= sort { $a <=> $b } @data  
I would like to know where the file is in relation to the sorting.

Thanks for any input!

7stud
Enthusiast

Dec 3, 2009, 12:32 PM

Post #2 of 5 (1509 views)

Re: [adamjazz1] Sorting Question [In reply to]	Can't Post

Code

my @data= split(/\d\.\d+);

Huh? Your post is incomprehensible.

You can do something like this:

Code

use strict; 
use warnings; 
use 5.010; 
 
my %hash = ( 
    1.299149 => '/yellow/3/sim/t2.pdf', 
    0.522122 => '/yellow/5/sim/t3.pdf' 
); 
 
my @sorted_keys = sort {$a <=> $b} keys %hash; 
 
for (@sorted_keys) { 
    say "$_ => $hash{$_}"; 
} 
 
--output:-- 
0.522122 => /yellow/5/sim/t3.pdf 
1.299149 => /yellow/3/sim/t2.pdf

(This post was edited by 7stud on Dec 3, 2009, 12:38 PM)

shawnhcorey
Enthusiast

Dec 4, 2009, 7:38 AM

Post #3 of 5 (1493 views)

Re: [adamjazz1] Sorting Question [In reply to]	Can't Post

You could use the Schwartzian transform:

Code

#!/usr/bin/env perl 
 
use strict; 
use warnings; 
 
use Data::Dumper; 
 
# Make Data::Dumper pretty 
$Data::Dumper::Sortkeys = 1; 
$Data::Dumper::Indent   = 1; 
 
# Set maximum depth for Data::Dumper, zero means unlimited 
$Data::Dumper::Maxdepth = 0; 
 
my @data = <DATA>; 
print '@data : ', Dumper \@data; 
 
my @sorted =  map { $_->[0] } 
              sort { $a->[2] <=> $b->[2] || $a->[0] cmp $b->[0] } 
              map { [ $_, split ] } 
              @data; 
print '@sorted : ', Dumper \@sorted; 
 
__DATA__ 
/yellow/3/sim/t2.pdf 1.299149 
/yellow/5/sim/t3.pdf 0.522122

__END__

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adamjazz1
Novice

Dec 10, 2009, 1:02 PM

Post #4 of 5 (1465 views)

Re: [7stud] Sorting Question [In reply to]	Can't Post

Hi, Sorry about my post. I was in a hurry.

Here is my script that I have been working on. I have made some changes, and I almost have it figured out...

This is what the data looks like.
output from showcluster.pl

Code

 t.28           385     0 
  t.2            395     0 
  t.20           620     0 
  t.12           685     0 
  t.7           2820     0 
t             9501    49

output from ensfiles.pl

Code

/s3/nh/nh2/1/85/nh2ct2.x 1.716882 
/s3/nh/nh2/12/92/nh2ct2.x 1.881869

What I want to do is take the first column "t.###" sorted sorted by the 2nd column. I only need no more than 9.

From this t.## I pass this to ensfiles.pl and get "/s3/nh/nh2/1/85/nh2ct2.x 1.716882" I want to make a hash of this data and sort it ascending by the 2nd column of data (the number).

I only need the top 3 from the sorted hash. Ideally I would like to have the printout be

Code

"t.## -> /s3/nh/nh2/1/85/nh2ct2.x (without this number though 1.716882)" 
"t.## -> /s3/nh/nh2/12/92/nh2ct2.x (w/o this number 1.881869)"

Code

#!/usr/bin/perl 
use strict; 
use warnings; 
 
my $n="nh.ens"; 
my $tag="nh"; 
my $dir="/orange/nh/"; 
 
my $qq; 
my @ww=(); 
my @data=(); 
my $d; 
my @f; 
my $dat; 
my $key; 
my %newhash; 
 
open INP, "showcluster.pl -dir $dir/$n  $tag | sort -k2n | tail  |"; 
    while (<INP>) { 
     chomp; 
     #print $_,"\n"; 
     $qq=substr($_,2,4 );  
     #$qq=~/^t\./g;  
     $qq=~s/\s$//g; 
     push(@ww, $qq); 
         
    } 
close INP; 
 
for (my $i=0; $i <=8; $i++) { 
 open INP, "ensfiles.pl -cluster $ww[$i] -dir $dir/$n/ $tag | sed q | "; 
 	while(<INP>) { 
	 chomp; 
	 @f=split(/\s/); 
         $dat={}; 
	 $dat->{fname}=$f[0]; 
	 $dat->{val}=$f[1]; 
         push(@data, $dat); 
	} 
 close INP;  
         
        open OUT, "| awk '{print $1}'   "; 
  	for $d ( @data) { 
         $newhash{$d->{val}}=$d->{fname}; 
        } 
        foreach $key (sort (keys %newhash)) { 
         printf OUT "%s ->  %s\n", $ww[$i],$newhash{$key}; 
        } 
	close OUT; 
}

Thanks everyone for your help!

johnpc831
Novice

Dec 10, 2009, 3:16 PM

Post #5 of 5 (1459 views)

Re: [adamjazz1] Sorting Question [In reply to]	Can't Post

I get the sorting question. I'm not following the rest of it.

If you have your data in a file called data.txt, and it looks like this:

Code

t.28           385     0 
t.2            395     0 
t.20           620     0 
t.12           685     0 
t.7           2820     0

Then you can get an array of the first column values sorted by the second column values like this:

Code

open(FH,"data.txt"); 
my @lines = <FH>; 
close(FH); 
 
my @sorted_first_column = map { $_->[0] } 
sort { $a->[1] <=> $b->[1] } 
map {[first_column($_),second_column($_)]} @lines; 
 
sub first_column { 
	my $data_value = shift; 
 
	$data_value =~ /^(t\.\d+)/; 
	return $1; 
} 
 
sub second_column { 
	my $data_value = shift; 
 
	$data_value =~ /^t.\d+\s+(\d+)/; 
 
	return $1; 
}

It looks like you only need the top three values, which you can access using their specific index values.

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