probier mal das:
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#!/usr/bin/perl
use strict;
use GD;
use Chart::bars;
my($obj);

$obj = Chart::Bars->new (600,400);
$obj->set ('title' => 'Foo Bar');
$obj->add_pt ('foo', 100, 100);
$obj->add_pt ('bar', 150, 150);
$obj->add_dataset ('foo', 'bar');
open(DAT,"<tabelle.csv");
while(<DAT>){
chomp;
my @zeile = split(/;/,$_);
my $spalte1 = $zeile[0];
my $spalte2 = $zeile[1];
$obj->add_dataset ($spalte1, $spalte2);
}
close(DAT);

$obj->cgi_png ();

$obj->png ("foo2.png");
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Grüße Oesi