Re: 3d Plot

[Thomas D. Dean]

On 07/10/15 19:30, Ben Abbott wrote:
> > On Jul 10, 2015, at 10:20 PM, Thomas D. Dean <address@hidden
> > <mailto:address@hidden>> wrote:
> >
> > On 07/10/15 18:57, Doug Stewart wrote:
> >
> > > On Fri, Jul 10, 2015 at 9:25 PM, tmacchant <address@hidden
> > > <mailto:address@hidden>
> > > <mailto:address@hidden>> wrote:
> > >
> > >    xx and yy is generated by u and v so that they are not appropriate
> > >    for mesh
> > >    seeing gnuplot example. Questioner wants plot against X and Y mesh.
> > >
> > >    I am writing from my smart phone and I cannot use octave.
> > >
> > >    Tatsuro
> > >
> > > try #2
> > >
> > > [xx,yy]=meshgrid(real(X),real(Y));
> > > Z=z(xx,yy);
> > > mesh(xx,yy,real(Z))
> >
> > Thanks, Doug.  This does not resemble the gnuplot demo.  This is the
> > surface of a 3d solid.
> >
> > Try the example directly into gnuplot.
> >
> > Tom Dean
>
> I don’t think Octave is able to render a parametric surface.
>
> The plot rendered by gnuplot is attached for those interested.

This plot is more like what I want than the one presented with an x11 
terminal.  In the qt terminal, the transparency is more correct.

I have been having problems with the qt terminal on Ubuntu, as discussed 
on the gnuplot list.

I can use the qt terminal, but, I have to issue the (same) plot command 
twice to get a correct plot.

Tom Dean