Thanks.

I have noticed those too. I am going to try and increase the max_gradient,
but I think this might be due to the noise function that I am using. I was
going to overlay the ground level with a different isosurface or
heightfield to make it a more gentle rolling ground rather than a flat
surface.

"Thomas de Groot" <t.d### [at] internlnet> wrote:
> "Pansworld" <nomail@nomail> schreef in bericht
> news:web.43de7ea39917d237beb38dbd0@news.povray.org...
> > I have been trying to get a UTAH type landscape to work for months now. I
> > think I have achieved moderate success at getting the base landscape. The
> > following image is a isosurface landscape that is a combination of DEM for
> > the Grand Canyon,f_snoise3d for stratification and some extra noise added
> > to give it more character.
> >
> > This is still work in progress with no atmospherics, clouds et al.
> >
> > Thanks
> >
> >
> Excellent start!
>
> Something seems a little wrong on the valley floor (holes in the
> isosurface?) maybe caused by very thin slabs of rock.
>
> Good work.
>
> Thomas

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