[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

alter code to print only average and group

Posted on 2009-07-12
7
Medium Priority
?
174 Views
Last Modified: 2012-05-07
I have tried changing this code to print to file only the average and the grouping to file, like this

23.43,02231
21.33,11002

could you show me how to do this please ?

I know it is altering the print OUT lines but what I am doing isnt working
and keep the time stamp at the end
#!/usr/bin/perl
use POSIX;
use strict;
use warnings;
use Data::Dumper;
use List::Util qw(sum);
 
my $startTime = time();
 
##### Open files
open(my $IN,"invim2.vim") or die "Could not open input: $!\n";
open(my $OUT,">outvim2.vim") or die "Could not open output: $!\n";
 
my @avgs1;
my @avgs2;
my ($maxavg1, $minavg1, $maxavg2, $minavg2);
 
        ##### Step 1: read a line, and split it on comma
        while(<$IN>){
        chomp;
        my @arr = split /,/;
        next unless @arr;
 
 
        # discard 1st and 2nd last and last item
        # shift @arr;
        # pop @arr;
        # pop @arr;
        # pop @arr;
 
 
        ##### Step 2: Sort data into ascending order
        @arr = sort {$a <=> $b} @arr;
        # print "arr @arr\n";
 
 
        ##### Step 3: Calculate difference between neighboring pairs
        my @diff = (map {$arr[$_] - $arr[$_-1]} (1..$#arr));
        #  print "diff @diff\n";
 
 
        ##### Step 4: Calculate amount in each group
        my @groups = (0)x5;
        foreach my $a (@arr) {
                $groups[$a/10]++;
        }
        #   print "group @groups\n";
 
 
        ##### Step 5: Calculate average
 
        my $avg1 = sum(@arr)/@arr;
        # printf "arr avg %.2f\n", $avg1;
        if(!$maxavg1 || $avg1 > $maxavg1) { $maxavg1 = $avg1; }
        if(!$minavg1 || $avg1 < $minavg1) { $minavg1 = $avg1; }
        push @avgs1, $avg1;
 
        my $avg2 = sum(@diff)/@diff;
        # printf "diff avg %.2f\n", $avg2;
        if(!$maxavg2 || $avg2 > $maxavg2) { $maxavg2 = $avg2; }
        if(!$minavg2 || $avg2 < $minavg2) { $minavg2 = $avg2; }
        push @avgs2, $avg2;
 
        ##### Step 6: Print results
        print $OUT join("\t", @arr) . "\tavg " . sprintf("%.2f\t", $avg1) . "group " . join("", @groups) . "\n";
        print $OUT join("\t", @diff) . "\t\tavg " . sprintf("%.2f\t", $avg2) . "\n";
        print $OUT "\n";
}
 
my $stopTime = time();
my $totalTime = $stopTime - $startTime;
 
#  printf "input: maxavg %d minavg %d avgavg %d\n", $maxavg1, $minavg1, sum(@avgs1)/@avgs1;
printf $OUT "For data values:\t\t avg avg %.2f\t maximum avg %.2f\t minimum avg %.2f \n",
                        sum(@avgs1)/@avgs1, $maxavg1, $minavg1 ;
#  printf "diff: maxavg %d minavg %d avgavg %d\n", $maxavg2, $minavg2, sum(@avgs2)/@avgs2;
printf $OUT "For data difference values:\t avg avg %.2f\t maximum avg %.2f\t minimum avg %.2f \n",
                        sum(@avgs2)/@avgs2, $maxavg2, $minavg2, ;
 
printf "Time started: %s   Time ended: %s   Total time:  %d minutes\n",
        strftime("%H:%M", localtime($startTime)), strftime("%H:%M", localtime($stopTime)), $totalTime/60;
printf $OUT "Time started: %s   Time ended: %s   Total time:  %d minutes\n",
        strftime("%H:%M", localtime($startTime)), strftime("%H:%M", localtime($stopTime)), $totalTime/60;
 
 
close($IN);
close($OUT);

Open in new window

0
Comment
Question by:Europa MacDonald
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24836449
In which step?
0
 
LVL 40

Accepted Solution

by:
mrjoltcola earned 2000 total points
ID: 24836452
Something like this should do:
printf $OUT "%.2f,%s\n", $avg1, join("", @groups);

Open in new window

0
 

Author Comment

by:Europa MacDonald
ID: 24836457
at the print out step 6
0
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

 

Author Closing Comment

by:Europa MacDonald
ID: 31602661
thankyou
0
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24836474
Remember printf is a special routine that comes in handy

printf <format string>, arg1, arg2, ..., argN

It correlates to the C version of printf, so see: perldoc -f printf
or see here for format specifiers. C/C++/Perl all share pretty much the same format since it originated from C.

http://www.cplusplus.com/reference/clibrary/cstdio/printf/


I like it because its easy to format the output in the format string rather than concatenating a lot of stuff together with regular print.
0
 

Author Comment

by:Europa MacDonald
ID: 24836480
ok well I can see some of that point

I have noticed

printf <....
and
printf OUT

the first is printing to the screen ? and the second to the text file ?
0
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24836484
Yes. If the first argument to print or printf has no comma separating it and the next argument, then the argument is assumed to be a file stream.
0

Featured Post

Hire Technology Freelancers with Gigs

Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A year or so back I was asked to have a play with MongoDB; within half an hour I had downloaded (http://www.mongodb.org/downloads),  installed and started the daemon, and had a console window open. After an hour or two of playing at the command …
There are many situations when we need to display the data in sorted order. For example: Student details by name or by rank or by total marks etc. If you are working on data driven based projects then you will use sorting techniques very frequently.…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
Six Sigma Control Plans

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question