This perl module provides 3D graphs for the GD::Graph module by
Martien Verbruggen, which in turn generates graph using Lincoln
Stein's GD.pm.

You use these modules just as you would any of the GD::Graph modules,
except that they generate 3d-looking graphs. Each graph type is
described below with only the options that are unique to the 3d
version. The modules are based on their 2d versions
(e.g. GD::Graph::bars3d works like GD::Graph::bars), and support all
the options in those. Make sure to read the documentation on
GD::Graph.