New to GD:Graph. I have tried several examples from site to test module. All result in some unicode string. What is my problem? Thanks

#!/usr/bin/perl -w
use 5.010;
use strict;
use warnings;
use GD::Graph::bars;

print"Hello world!\n";

my @data =([1,2,3,4],[5,3,8,9]);
my $graph = GD::Graph::bars->new(400,300);
$graph->set(
    x_label     => 'X num',
    y_label     => 'Y num',
    title       => 'Test',
) or warn $graph->error;

my $myimage = $graph->plot(\@data) or die $graph->error;

print "Content-type: image/png\n\n";
print $myimage->png;

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In reply to gd::graph returns unicode by lutus65

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