[GRASS-user] v.surf.rst geological surfaces

Dylan Beaudette dylan.beaudette at gmail.com
Thu Oct 26 13:31:18 EDT 2006

Hi Francesco,

it is possible "model" discontinuous features (the gully example in the GRASS 
book [1] comes to mind) however there are important limitations that you must 
consider. Try searching past archives of this list- for some rather long 
discussions on a similar topic: breaklines, rst, nnbathy.

Maciej has implemented an alternate interpolator which may do what you need.

Post back with your results, or further questions if the archives do not help.



On Thursday 26 October 2006 03:18, Francesco Mirabella wrote:
> Hi Maciej and list,
> thanks for your reply, I will try to get some more info about tangential
> curvatures.
> By the way, does anyone know if GEOLOGICAL SURFACES like fault planes or
> bedding planes (not "phenomena", like gas emissions, etc.) can be modeled
> with v.surf.rst? or with some other grass-command? Has anyone done it?
> cheers
> Francesco
> On Wed, Oct 25, 2006 at 05:05:19PM +0200, Maciej Sieczka wrote:
> > Francesco Mirabella wrote:
> > > Dear all,
> > > I'm working on a 3D vector map of a geological surface. I tried to
> > > interpolate the points with v.surf.rst getting an elevation raster map
> > > which is attached to this email as image. The surface changes its depth
> > > along a curved line (see the attachment). Is there a way to tune the
> > > v.surf.rst command in order to make it take into account of the
> > > curvature? Is "tcurv" option doing it?
> >
> > tcurv=string
> >     Output tangential curvature raster file
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Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis

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