#!/usr/bin/perl -w
use strict;
use CGI;
use CGI::Carp qw(fatalsToBrowser warningsToBrowser);
use GD::Graph::area;
use GD::Graph::colour qw(hex2rgb);

print "Content-Type: image/png\n\n";

my @data = (
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
);

my @names = qw/sample21/;

for my $graph (GD::Graph::area->new)
{
my $name = shift @names;
#print STDERR "Processing $name\n";

$graph->set(
title => 'An Area Graph',
dclrs => ['green'],
#accentclr=>'red',
y_max_value => 10,
x_max_value => 10,
x_min_value=>0,
y_min_value=>0,
y_tick_number => 5,
x_tick_number => 5,
overwrite=>1,

#ticks_length=>,
#y_label_skip => 2,
#x_label_skip => 0,
x_tick_offset=>1,
#y_plot_values=>1,
#x_plot_values=>1,

#correct_width=>1,
#accent_treshold => 20,
transparent => 1
);

#$graph->set_legend( 'one', 'two' );
my $im = $graph->plot(\@data); 
print $im->png;
}
[download]

Not loud enough for me, I fear.

In that grep there are only three matches for "origin", the rest is for "original" and derivations.

Those three matches refer to a module that is only used internally, and doesn't contain any POD.

To me it's not obvious how that might help solving the OP's problem.

Um, azredwing needs to show code, sample input data ... it might help the op if hes willing to USTL and figure out sub val_to_pixel