I'm trying to create some candlestick charts using DBD::Chart::Plot. According to the documentation I can do it by providing the min and max values in addition to my x axis values:

$img->setPoints(\@xdata, \@ymindata, \@ymaxdata, 'blue points');
[download]

Here is the code I'm using (in Mason but I don't think that is the issue):

my $img = DBD::Chart::Plot->new(400, 500);

$img->setOptions (
    horizMargin => 75,
    vertMargin => 100,
    title => 'Visual Analysis',
    yLog => 1,
);

my @years = (1994 .. 2003);
my @lows = (1..10);
my @highs = (21..30);

unless ($img->setPoints(\@years, \@lows, \@highs, 'black')) {
    die $img->error;
}

$r->content_type('image/jpeg');
$m->clear_buffer;
$m->out($img->plot('jpeg'));
$m->abort(OK);
[download]

I just get a line graph with the lows. Is anyone else using this module? Should I try something else for a chart that uses logarithmic scales and candlestick charts? They will be mixed with regular line plots as well.