Thank you Strahimir, this is very interesting.
"Strahimir Antoljak" wrote in message
news:0A915BCDD23CE7D38112503EEFE5D994@in.WebX.maYIadrTaRb...
> very brief extract:
>
>
>
> "In Autodesk Civil 3D, surface smoothing is achieved by adding points at
> system determined elevations using Natural Neighbor Interpolation (NNI) or
> Kriging methods. This smoothing results in smoothed contours with no
> overlapping.
>
>
>
> Only TIN surfaces support surface smoothing.
>
>
>
> Surface smoothing resolves a common problem associated with individual
> contour smoothing where the smoothing is applied to individual contour
lines
> without regard to adjacent contours. This sometimes creates overlapping
> contours. Smoothing the entire surface results in smoothed contours.
>
> There are additional benefits to surface smoothing. The Kriging method
> enables you to extrapolate beyond the extents of a surface based on the
> statistical trends across the existing surface. For example, if a site
> contains a random sample of borehole elevations (a sparse set of data
> points), you can statistically extrapolate a representation of a surface.
>
> Smoothing is an edit operation performed on a surface. Smoothing
properties
> can be specified and then turned on or off. When the smoothing is turned
> off, the surface reverts back to its original state, but the smoothing
> properties are preserved in the surface's operation list. For more
> information about the operation list, see Understanding the Surface
> Definition.
>
> Natural Neighbor Interpolation (NNI) and Kriging are the two methods of
> surface smoothing that are provided in Autodesk Civil 3D. "
>
> --
> Strah @ Langan
>
>
> "Neil Wilson" wrote in message
> news:28D067926B91466D9E6268E1C6000FD5@in.WebX.maYIadrTaRb...
> > I read in the list of features that Civil 3D includes surface smoothing.
> In
> > an old LDD discussion, one of the techs mentioned that surface smoothing
> was
> > something that was needed to create true smooth contours, but the
> algorythms
> > to accomplish it were difficult. Is this what is now being implemented?
> >
> > If so, is there an example or detail as to what can be done published
> > somewhere?
> >
> >
>
>