EOF
}
+sub get_players_and_ratings {
+ my ($dbh, $season, $division, $subdivision) = @_;
+
+ my $q = $dbh->prepare('SELECT fotballdeltagere.id,fotballdeltagere.navn,rating,rating_stddev FROM fotballdeltagere JOIN fotballserier ON fotballdeltagere.serie=fotballserier.nr LEFT JOIN ratings ON fotballdeltagere.id=ratings.id WHERE sesong=? AND divisjon=? AND avdeling=?');
+ $q->execute($season, $division, $subdivision);
+
+ while (my $ref = $q->fetchrow_hashref) {
+ my $id = $ref->{'id'};
+ $players{$id} = sanitize(Encode::decode_utf8($ref->{'navn'}));
+ $ratings{$id} = $ref->{'rating'};
+ $ratings_stddev{$id} = $ref->{'rating_stddev'};
+ }
+ $q->finish;
+}
+
+sub get_matches {
+ my ($dbh, $season, $division, $subdivision) = @_;
+
+ my @matches = ();
+ my $q = $dbh->prepare('
+ SELECT
+ d1.id AS p1, d2.id AS p2, maalfor AS score1, maalmot AS score2
+ FROM fotballresultater r
+ JOIN fotballserier s ON r.serie=s.nr
+ JOIN fotballdeltagere d1 ON r.lagrecno=d1.nr AND r.serie=d1.serie
+ JOIN fotballdeltagere d2 ON r.motstander=d2.nr AND r.serie=d2.serie
+ WHERE
+ sesong=? AND divisjon=? AND avdeling=?
+ AND lagrecno > motstander
+ ');
+ $q->execute($season, $division, $subdivision);
+
+ while (my $ref = $q->fetchrow_hashref) {
+ push @matches, [ $ref->{'p1'}, $ref->{'p2'}, $ref->{'score1'}, $ref->{'score2'} ];
+ }
+ $q->finish;
+
+ return @matches;
+}
+
sub get_covariance_matrix {
my ($dbh, @players) = @_;
EOF
}
+sub find_avg_rating {
+ my ($ratings) = shift;
+
+ my $sum_rating = 0.0;
+ for my $r (values %$ratings) {
+ $sum_rating += $r;
+ }
+ return $sum_rating / scalar keys %ratings;
+}
+
# Get auxillary parameters
my $q = $dbh->prepare('SELECT * FROM ratings WHERE id < 0');
$q->execute;
print_division_selector($dbh, \@divisions, \@subdivisions, $division, $subdivision);
-# Get players and ratings
-my $sum_rating = 0.0;
-
-$q = $dbh->prepare('SELECT fotballdeltagere.id,fotballdeltagere.navn,rating,rating_stddev FROM fotballdeltagere JOIN fotballserier ON fotballdeltagere.serie=fotballserier.nr LEFT JOIN ratings ON fotballdeltagere.id=ratings.id WHERE sesong=? AND divisjon=? AND avdeling=?');
-$q->execute($season, $division, $subdivision);
+get_players_and_ratings($dbh, $season, $division, $subdivision);
-while (my $ref = $q->fetchrow_hashref) {
- my $id = $ref->{'id'};
- $players{$id} = sanitize(Encode::decode_utf8($ref->{'navn'}));
- $ratings{$id} = $ref->{'rating'};
- $ratings_stddev{$id} = $ref->{'rating_stddev'};
- $sum_rating += $ref->{'rating'};
-}
-$q->finish;
-
-$q = $dbh->prepare('
-SELECT
- d1.id AS p1, d2.id AS p2, maalfor AS score1, maalmot AS score2
-FROM fotballresultater r
- JOIN fotballserier s ON r.serie=s.nr
- JOIN fotballdeltagere d1 ON r.lagrecno=d1.nr AND r.serie=d1.serie
- JOIN fotballdeltagere d2 ON r.motstander=d2.nr AND r.serie=d2.serie
-WHERE
- sesong=? AND divisjon=? AND avdeling=?
- AND lagrecno > motstander
-');
-$q->execute($season, $division, $subdivision);
-
-while (my $ref = $q->fetchrow_hashref) {
- push @matches, [ $ref->{'p1'}, $ref->{'p2'}, $ref->{'score1'}, $ref->{'score2'} ];
-}
-$q->finish;
+my @matches = get_matches($dbh, $season, $division, $subdivision);
my $cov = get_covariance_matrix($dbh, keys %players);
make_table($lowest_division, \%ratings, $cov);
-my $avg_rating = $sum_rating / scalar keys %players;
+my $avg_rating = find_avg_rating(\%ratings);
printf " <p>Gjennomsnittlig rating i denne avdelingen er <strong>%.1f</strong>.</p>\n", $avg_rating;
wloh_common::output_last_sync($dbh);