Tornado vortex latex

[Carlo Sartori]

Hello word
I'm trying to use this program
http://www.redhammer.se/tornado/index.html#contact in octave
The matlab version uses the command fill3. That command doesn't exist
in octave (http://octave.sourceforge.net/doc/F.html#F) but I found
this: http://users.powernet.co.uk/kienzle/octave/matcompat/scripts/plot/fill3.m
I don't know if the function that I found work exactly like the matlab
function since it was written for an old version of octave. It uses
the command gset and gsplot and I don't know how change it for make it
working with octave 3.2.3.

My question is:
Could you help my to make useful the fill3 function, or give me an
alternative? and is there anybody that have tried to use tornado in
octave?
Thanks
Carlo