[GRASS-user] triangulation

[vinod kumar]

Hi Victoria,

I want to give you a clear idea what am doing. So that you will help me in
giving a best solution.

*Explanation*:


   -  I am having an orthophoto where am intrested to make 3D layer.
   -  I want to make grid and triangulate the data in order to get
   weightage   factor for each pixel for the entire raster data, which helps me
   to make
   3D layer.

If you are having any idea on making 3D layer other than this method which i
have explained, you are pleased to welcome.

Note: This is an ortho photo which only have x and y values, not a LIDAR
data  having x,y,z values in order to use the command like *Importing x,y,z
nodes with v.in.ascii<http://grass.osgeo.org/grass64/manuals/html64_user/v.in.ascii.html>
,*

Thanks,
nani.



On Thu, Apr 7, 2011 at 10:09 PM, Daniel Victoria
<daniel.victoria at gmail.com>wrote:

> Do you mean you want to interpolate your data?
>
> On Wed, Apr 6, 2011 at 4:30 AM, vinod kumar <nani.kunithi at gmail.com>
> wrote:
> > Hi Hamesh,
> >
> > I only have raster data and am intrested to make grid which is generally
> > needed and Traingulate for the raster data.
> >
> > Simply i am making 3d TIN where i do not have ascii values of  ´ Z ´ .
> >
> > Thanks,
> > nani.
> >
> > On Wed, Apr 6, 2011 at 9:11 AM, Hamish <hamish_b at yahoo.com> wrote:
> >>
> >> vinod wrote:
> >> > I am using grass latest version and i want to know
> >> >
> >> > How to triangulate the raster data using grass
> >>
> >> so you have a raster grid you'd like to simplify into a TIN?
> >> see Laura's r.refine addon module:
> >>  http://grass.osgeo.org/wiki/TIN
> >> (see also
> >>  http://grass.osgeo.org/wiki/Contour_lines_to_DEM )
> >>
> >>
> >> > so that i can assign attributes for each pixel?
> >>
> >> no need for triangles, 'g.region res=' + 'r.to.vect feature=point'
> >>
> >>
> >> Hamish
> >>
> >
> >
> > _______________________________________________
> > grass-user mailing list
> > grass-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/grass-user
> >
> >
>
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