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Average Node XP per Month

by choroba (Abbot)
on Sep 18, 2013 at 13:15 UTC ( #1054649=perlmeditation: print w/ replies, xml ) Need Help??

Are you a regular monk? If yes, you might be interested in how the quality of your posts changes in time. At least I was curious about it, so I created a script to get the data from the appropriate XML ticker and display it as a graph in gnuplot. It shows the average XP per node for each month.
#!/usr/bin/perl use warnings; use strict; use WWW::Mechanize; use XML::LibXML; use constant { PM_URL => 'http://www.perlmonks.org/bare/?node_id=', # Node ids: LOGIN => 109, XP => 32704, }; print "User? "; chomp(my $user = <>); print "Pass? "; chomp(my $pass = <>); my $mech = 'WWW::Mechanize'->new; $mech->get(PM_URL . LOGIN); $mech->submit_form( form_number => 1, fields => { user => $user, passwd => $pass, }, ); my %out; my $limit = 500; my $offset = 0; while (1) { $mech->get(PM_URL . XP . ";limit=$limit;offset=$offset"); my $xml = 'XML::LibXML'->load_xml(string => $mech->content); my @nodes = $xml->findnodes('/USERNODES/NODE'); last unless @nodes; for my $node (@nodes) { my ($date, $xp) = map $node->getAttribute($_), qw(createtime r +eputation); substr $date, 7, length($date), q{}; # Group by month. $out{$date}{count}++; $out{$date}{sum} += $xp; } $offset += $limit; } open my $OUT, '>', 'xp.out' or die $!; for my $date (sort keys %out) { print {$OUT} "$date\t", $out{$date}{sum} / $out{$date}{count}, "\n +"; } close $OUT or die $!; =for gnuplot set xdata time set timefmt '%Y-%m' set xtics format '%Y-%m' plot 'xp.out' using 1:2:(2e6) with boxes fs solid =cut

Please, do not run the script too often, as it might lag our already panting servers :-)

The script produces a file xp.out (I use a fixed name, so I can just copy&paste the POD section to gnuplot). If you do not happen to have gnuplot installed, you can use the following Perl programme (using Tk) to view the graph. Its input file defaults to xp.out, but you can specify any other file name on the command line.

#!/usr/bin/perl use warnings; use strict; use 5.010; # // use Tk; use constant MESSAGE => 'Point a mouse over a bar to see the details'; my $width = 25; my $height = 200; my $space = 10; my $input = shift // 'xp.out'; open my $IN, '<', $input or die $!; my @rectangles; my ($oldest, $max, $min) = (0, 0, 0); while (my $line = <$IN>) { my ($date, $xp) = split ' ', $line; my ($year, $month) = split /-/, $date; my $x = $year * 12 + $month; $oldest ||= $x; $max = $xp if $xp > $max; $min = $xp if $xp < $min; push @rectangles, [ $x - $oldest, $xp, $date ]; } my $step = $height / $max; my $mw = 'MainWindow'->new(-title => 'Average XP per month'); my $info = MESSAGE; $mw->Label(-textvariable => \$info, -foreground => 'black', -background => 'white', -relief => 'ridge', )->pack(-pady => 5); my $canvas = $mw->Canvas(-background => 'white', -width => $width * (1 + $rectangles[-1][ +0]), -height => $height + 2 * $space + $step * + abs $min, )->pack(-padx => 10, -pady => 10); for my $rect (@rectangles) { $canvas->createRectangle( $rect->[0] * $width, $space + $step * ($max - $rect->[1] +), ++$rect->[0] * $width, $space + $height, -fill => (qw/blue cyan green yellow orange red/) [($rect->[1] + abs $min) / ($max + abs $min) * + 5], -outline => 'black', -tag => "bar$rect->[0]", ); $canvas->bind("bar$rect->[0]", '<Any-Enter>' => sub { $info = "$rect->[2]: $rect->[ +1]" }); } $canvas->bind('all', '<Any-Leave>' => sub { $info = MESSAGE }); $mw->Button(-text => 'Quit', -command => sub { exit }, )->pack; MainLoop();

Related: Re: Zen and the art of ignoring XP.

Updated: Fixed the second script (line 41).

لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

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Re: Average Node XP per Month
by 5mi11er (Deacon) on Sep 22, 2013 at 16:42 UTC
    Perhaps this would be better placed on a public accessible page with results for the past cached and only posts from the previous month or so recalculated? Would save from having to beat the system for each monk that was interested...

    I'm having a vague memory that maybe I've seen something like that in the distant past.

    -Scott

      Even the nodes older than one month can still be voted for.
      لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
        Yes, but I believe the amount of new XP points on nearly all nodes over a month old to be a tiny percentage of the votes cast.

        You could cache those older than a month results, and maybe recalculated them occasionally, maybe once every few months?

        -Scott

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