http://qs1969.pair.com?node_id=501403

Sparklines are something that I haven't seen mentioned on perlmonks so far. Sparklines are small graphs that are base64 encoded and embededded into plain html (see: http://www.ietf.org/rfc/rfc2397.txt for further details). There is already a module on cpan: GD::Graph::sparklines to build line-graphs as sparklines. My snippet is just a quick hack to show a way to build different kind of sparklines using GD and MIME::Base64 :
#!/usr/bin/perl use strict; use warnings; use GD::Graph; use GD::Graph::pie; use MIME::Base64; my @data = ( ["1st","2nd"], [ 1, 2], ); my $graph = new GD::Graph::pie( 120, 120 ); $graph->set( dclrs => [ qw( #FECECE #FEFECE #FFFFFF ) ], start_angle => 90 ); my $gd = $graph->plot(\@data) or die $graph->error; print '<IMG SRC="data:image/png;base64,', encode_base64($gd->png), '" alt="sparkline"/>';