Here's one way that may help you get started.

It uses a hash of arrays.

#!/bin/perl5

use strict;
use warnings;
use Data::Dumper;

my %data;
my $file;

while (my $line = <DATA>){
  if ($line =~ /([^.]+\.csv)/){
    $file = $1;
    $data{$file} = [];
  }
  elsif ($line =~ /(-?[\d.]+)/){
    push @{$data{$file}}, $1;
  }
}

for my $file (keys %data){
  print "file: $file\n";
  # open $file
  print "data:\n";
  print "\t$_\n" for @{$data{$file}};
  print "\n";
  # print data to file
}

#print Dumper \%data;

__DATA__
filename =

without012.csv


pred =

   -0.0105
    0.0645
    0.1989
    0.0151
    0.0289
    0.0400
    0.5313


filename =

without013.csv


pred =

   -0.0080
    0.0663
    0.1911
    0.0075
    0.0288
    0.0302
    0.5234


filename =

without014.csv


pred =

   -0.0023
    0.0595
    0.2582
    0.0323
    0.0285
    0.0578
    0.5807

[download]

output: 

---------- Capture Output ----------
> "C:\Perl\bin\perl.exe" _new.pl
file: without012.csv
data:
    -0.0105
    0.0645
    0.1989
    0.0151
    0.0289
    0.0400
    0.5313

file: without013.csv
data:
    -0.0080
    0.0663
    0.1911
    0.0075
    0.0288
    0.0302
    0.5234

file: without014.csv
data:
    -0.0023
    0.0595
    0.2582
    0.0323
    0.0285
    0.0578
    0.5807


> Terminated with exit code 0.

[download]

Hope this helps

In reply to Re: extracting data and saving into seperate files by wfsp
in thread extracting data and saving into seperate files by Angharad

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