Plot4d

> 
> There's a script and picture at
> 
> http://gnuplot.sourceforge.net/demo_4.3/4D-data.html
> 
> By the way I have also looked at the draw-package with can't do it either.
> 

Thanks for this link, I found it very useful.

I have commited a new version of package draw:

http://maxima.cvs.sourceforge.net/maxima/maxima/share/draw/draw.lisp

download and place it in your local share folder.

Use option enhanced3d for plotting the fourth dimension as described in 
these examples, both for 'explicit' and 'parametric_surface' objects:

http://www.telefonica.net/web2/biomates/maxima/gpdraw/func3d/index.html#4d

http://www.telefonica.net/web2/biomates/maxima/gpdraw/parametric/index.html#4d

(In general, I found that 'parametric_surface' objects and pm3d are not 
good friends, and sometimes pictures are not very nice; this problem is 
not new and at this moment I don't know how to solve it.)

I'll update the documentation (English and Spanish) next week.

Hope you'll find this useful.


-- 
Mario Rodriguez Riotorto
http://www.telefonica.net/web2/biomates