renamed the directory

[ndwebbie.git] / NDWeb / Graph.pm

diff --git a/NDWeb/Graph.pm b/NDWeb/Graph.pm
new file mode 100644 (file)
index 0000000..6f5ff47
--- /dev/null
+++ b/NDWeb/Graph.pm
@@ -0,0 +1,69 @@
+#**************************************************************************
+#   Copyright (C) 2006 by Michael Andreen <harvATruinDOTnu>               *
+#                                                                         *
+#   This program is free software; you can redistribute it and/or modify  *
+#   it under the terms of the GNU General Public License as published by  *
+#   the Free Software Foundation; either version 2 of the License, or     *
+#   (at your option) any later version.                                   *
+#                                                                         *
+#   This program is distributed in the hope that it will be useful,       *
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+#   GNU General Public License for more details.                          *
+#                                                                         *
+#   You should have received a copy of the GNU General Public License     *
+#   along with this program; if not, write to the                         *
+#   Free Software Foundation, Inc.,                                       *
+#   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+#**************************************************************************/
+
+package ND::Web::Graph;
+use strict;
+use warnings;
+use ND::Include;
+use GD::Graph::lines;
+require Exporter;
+
+our @ISA = qw/Exporter/;
+
+our @EXPORT = qw/graphFromQuery/;
+
+sub graphFromQuery {
+       my ($x,$y,$settings,$query,) = @_;
+
+       my %graph_settings = (
+               line_width => 1,
+               y_number_format => sub { prettyValue abs $_[0]},
+               legend_placement => 'BL',
+               #zero_axis => 1,
+               box_axis => 0,
+               boxclr => 'black',
+               axislabelclr => 'black',
+       );
+
+       my $fields = $query->{NUM_OF_FIELDS};
+       my @fields;
+       for (my $i = 0; $i < $fields; $i++){
+               push @fields,[];
+       }
+       while (my @result = $query->fetchrow){
+               for (my $i = 0; $i < $fields; $i++){
+                       push @{$fields[$i]},$result[$i];
+               }
+
+       }
+       $graph_settings{x_label_skip} = int(1+(scalar @{$fields[0]}) / 6);
+
+       my $graph = GD::Graph::lines->new($x,$y);
+       $graph->set_legend(@{$query->{NAME}}[1..$fields]) or die $graph->error;
+
+       for my $key (keys %{$settings}){
+               $graph_settings{$key} = $settings->{$key};
+       }
+
+       $graph->set(%graph_settings);
+       my $gd = $graph->plot(\@fields) or die $graph->error;
+       return $gd->png;
+}
+
+1;