Hello fellow Monks!
I have made this script for creating histogram plots:

sub save_chart
{
    my $chart = shift or die "Need a chart!";
    my $name = shift or die "Need a name!";
    local(*OUT);

    my $ext = 'png';
    open(OUT, ">$name.$ext") or 
        die "Cannot open $name.$ext for write: $!";
    binmode OUT;
    print OUT $chart->gd->$ext();
    close OUT;
}

use GD::Graph::bars;
use GD::Graph::hbars;
use GD::Graph::colour;

my @data = (
["name1", "name2", "name3","name4"],
[23, 26, 53, 27],
[77, 74, 47, 73]
);

my @names = qw/sample15 sample15-h/;
my $font_dir  = '/usr/share/fonts/truetype';
my $font_file = "$font_dir/freefont/FreeSans.ttf";

for my $my_graph (GD::Graph::bars->new, GD::Graph::hbars->new(700,500)
+)
{
my $name = shift @names;
print STDERR "Creating image\n";

$my_graph->set(
bgclr => 'white',
box_axis => 0,
y_max_value => 100,
dclrs => ['#ff782a', '#6daa3a'],
title => 'MY_TITLE',
bar_width   => 10,
bar_spacing   => 4,
y_tick_number => 2,
cumulate => 2,
borderclrs => $my_graph->{dclrs},
bar_spacing => 4,
transparent => 0,
x_label_position   => 0.5,
tick_length => -4,
axis_space => 6,
x_ticks => 0,
bar_spacing => 1,
bargroup_spacing => 20,
fgclr  => '#bbbbbb',
axislabelclr => '#333333',
labelclr => '#333333',
textclr => '#333333',
legendclr => '#333333',
legend_placement => 'DC',
legend_marker_width  => 12,
legend_marker_height => 12,
legend_spacing => 6,
long_ticks => 0,
borderclrs  => [undef]
);

$my_graph->set_title_font($font_file, 16);
$my_graph->set_x_label_font($font_file, 16);
$my_graph->set_y_label_font($font_file, 16);
$my_graph->set_x_axis_font($font_file, 11);
$my_graph->set_y_axis_font($font_file, 11);
$my_graph->set_legend_font($font_file, 11);

$my_graph->set_legend(qw(%leg1 %leg2));
$my_graph->plot(\@data);
save_chart($my_graph, $name);
}
[download]

Can you please tell me how I can pass the arrays in @data instead of hard-coding them inside the script? Because I want to make the script "universal"... I mean, if I have 3 arrays, namely @array_names, @array_numbers1 and @array_numbers2, how do I pass their values into the array @data?
Thank you!

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