Newbie problem: plotting with maxima



Dear maxima users

I am trying to start using maxima. After I compiled gcl-2.3.8 and
maxima-5.4 I am trying to get some plots. But when I tried something
like:

plot2d(sin(x),[x,-5,5]);

or

plot3d(2^(-u^2+v^2),[u,-5,5],[v,-7,7]);

the screen is completely full of data but any graphic appear. I thought
that maxima had the possibility to use Tcl/tk in order to plot graphics
on the screen, but it doesn't work for me. What am i doing wrong ? 

I tested gcl (tcl-tk) doing 

> (si::tkconnect)
> (load "/usr/local/lib/gcl-2.3.8/gcl-tk/demos/widget.lisp")


and it worked pretty well. I have in my linux box:

tcl-8.3.2-4mdk
tk-8.3.2-4mdk
tclx-8.3.2-4mdk                                                                 

How can I get plots from maxima ? For me, it is not necessary to use an
interface it would be suficient enough to produce gnuplot format output,
or whatever it was.

Please reply directly the answers to me because I am not subscribe to
this list.
Thank you in advance for your help.

-- 
http://www.iit.upco.es/~oscar
The greatest remedy for anger is delay.