I would like to suggest you use DBD::Chart or DBIx::Chart. Those modules leave DBI driver abstraction for rendering

• pie charts
• bar charts
• histograms
• box & whisker charts
• linegraphs
• pointgraphs (scatter graphs)
• areagraphs
• candlestick graphs
• Gantt charts
• quadtree graphs

And is there a way in GD.pm for me to print them all directly to the browser without file writing?

#!/usr/bin/perl -w

use strict;
use GD;

my $image = new GD::Image(468,60);

. . .

print "Content-type: image/png\n\n";
print $image->png;
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SV* sv_bless(SV* sv, HV* stash);