[GRASS-user] Re: tin to raster dem: SOLVED

[ivan marchesini]

Dear all, dear Maciek,
many thanks to all for the answers..
the solution proposed by Maciek works really well...
it seems that the module v.surf.nnbathy modified changing in line 138
"-P alg=nn" with "-P alg=l" is able to create a plane passing for tree
rasterized points!!!!
many thanks!!!
Ivan



Il giorno sab, 17/06/2006 alle 13.00 +0200, Maciek Sieczka ha scritto:
> On Fri, 16 Jun 2006 10:50:23 +0200
> ivan marchesini <marchesini at unipg.it> wrote:
> 
> > Dear all...
> > I have been able to create a tin starting from the v.delaunay module
> > and then manual editing the v.delaunay output exported with v.in.ascii
> > (format=standard) 
> > now I can see, using nviz, the some filled triangles in the 3d
> > space...!!!!
> > now the problem:
> > I would like to transfrom the tin surface in a raster surface...
> > is it possible in some way!!!!
> > any idea????
> 
> 
> This *might* work:
> 
> Get the apices of your triangles into points vector, rasterize it
> (v.to.rast) and feed to my r.surf.nnbathy
> (http://grass.gdf-hannover.de/wiki/GRASS_AddOns).
> 
> You will only have to modify the script slightly. In line 138 put "-P
> alg=l" instead of "-P alg=nn". This will make nnbathy triangulate
> only, without any smoothing.
> 
> Let me know if it worked.
> 
> Maciek
> 
> P.S.
> 
> Please don't post to grasslist at baylor.edu. Post to 
> grassuser at grass.itc.it.
> 
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-- 
Ivan Marchesini
Department of Civil and Environmental Engineering
University of Perugia
Via G. Duranti 93/a 
06125
Perugia (Italy)
e-mail: marchesini at unipg.it
        ivan.marchesini at gmail.com
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