Mine works, too (5.9.2 and 5.9.3) in linux.
Get a warning message plot3d([u,v,2],[u,-2,2],[v,-2,2]);
Warning: empty z range [2:2], adjusting to [1.98:2.02]
the commands:
f(u,v):= 2;
plot3d(f(u,v),[u,-3,3],[v,-3,3]);
work just fine as is, so why worry about it?
However, the command
plot3d(f,[u,-3,3],[v,-3,3]);
also produces a similar warning message. So, it probably won't work
for you at all.
So, it looks as if the command
plot3d([expr,expr,expr],[u,-3,3],[v,-3,3]);
is expecting explicitly defined functions for the <expr>.
My guess is that you would have to read the source code to really find out
what is goind on.
-sen
On Wed, 2 Aug 2006, John Guenther wrote:
> Hi
>
> I have continued to try to figure out why I can't get the following
> command to plot:
>
> plot3d([u,v,2],[u,-3,3],[v,-3,3]);
>
> I went so far as to uninstall the version of maxima I was using and
> downloaded the newest version.
> The same thing happens.
> Everyting appears to work except no plot window appears. If this is the
> first command entered %o1 and %i2 appear in the maxima window but as I
> said no plot window appears.
>
> This is in contrast to:
>
> plot3d([2,u,v],[u,-3,3],[v,-3,3]); and
> plot3d([u,2,v],[ u,-3,3],[v,-3,3]);
>
> both of which work.
>
> Jaime says the problimatic command works for him???
>
> Please, any one tell me what I'm doing wrong?
>
> John G.
>
>
>
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