GIFgraph problem

[Jan ' Kozo ' Vajda]

pouzivam  GIFgraph.pm a mam tento problem:
--kod --
use GIFgraph::lines;

@TIME = qw(6:01am 6:02am 6:03am 6:04am 6:05am 6:06am 6:07am 6:08am 6:09am);
@DATA = qw(0.13 0.13 0.12 0.14 0.08 0.17 0.16 0.10 0.04);

@data = ( 
	\@TIME,
	\@DATA
	);
	
$my_graph = new GIFgraph::lines(1600,300);

$my_graph->set(
        'x_label' => 'Time',
        'y_label' => 'Data',
        'title' => 'Some graph',
        'y_max_value' => 0.60,
        'y_min_value' => 0,
        'y_tick_number' => 12,
        'y_label_skip' => 2,
        'box_axis' => 0,
        'line_width' => 1,
);        

$my_graph->plot_to_gif( "out.gif", \@data );


-- koniec kodu --

y_min_value mam nastavene na 0 a predsa mi vo vyslednom gife hodi
y_min_value ako -0.1 .. co mi potom rozsaha cely graf ..

cim to moze byt ?





	                                   K O Z O 
                		    ===================================
                                      Look At Your Young Man Fighting
                                         Look At Your Woman Crying
                                       Look At Your Young Man Dying
                                    The Way They've Always Done Before