[GRASS-user] help needed with v.to.rast

[José María Michia]

Hi,

> v.in.ascii to import the points (looks good from display)
> v.to.rast
> r.resamp.interp to interpolate the gaps

Maybe your approach is correct, but I've never used this command for
interpolation.

If you wish, try this:

v.in.ascii (same as before)

g.region -p -a vect=name_of_your_vector_points_map res=5 (you can
change the value of res, but first try this value, it seems
appropriate to a region of 195x85 meters)

v.surf.rst input=name_of_your_vector_points_map layer=0
elev=name_of_interpolated_raster_map

I hope that will be useful for you, and I hope that my English is not
been so bad.
José María
Saludos


2008/9/13 WolfgangZ <wollez en gmx.net>:
> Hi,
>
> I need some help as the results that I get at the moment are not what I
> expect.
>
> Task:
> I want to transfer some irregular spaced points (height values) to a regular
> spaced dataset by interpolation.
>
> What I tried:
> v.in.ascii to import the points (looks good from display)
> v.to.rast
> r.resamp.interp to interpolate the gaps
>
> The result:
> there is still "white" space between the points, depending on the region
> setting I got some colored spots.
>
> My dataset:
> 24 z-Values for a region of 195 x 85 m (I know that are not that many
> points). The z values vary between 368 and 453.
>
> Any ideas/suggestions what I could do to get the desired output?
>
> Regards
> Wolfgang
>
> _______________________________________________
> grass-user mailing list
> grass-user en lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-user
>