yup i have my scaled data and the first element of the array passing to $graph->plot contains the y-axis labels.Its actually an array of arrays sumthing like this:
@data= 'jan','feb','mar' , '2','2','5' ;
$graph->plot(\@data);
My question is i am setting show_values=1(true) in set graph and want to show 2:30 for 2.5