[GRASS-user] import ascii error + how to build a tin

Hamish hamish_nospam at yahoo.com
Wed May 23 00:32:02 EDT 2007

Ricardo Oliveira wrote:
> I am getting an error when importing a .xyz file with the coordinates
> of a scene. The only reason i am looking at is the fact that the z
> value is negative, and after the field separator (,).
> Here is the error:
> Error reading ascii file:
> 1499.4708,4314.6574,-1.5260

what are the v.in.ascii command line options you are using?
what version of GRASS?
fs=, ?

why format=standard not format=point? If using format=standard you need
to use the special format described in the v.in.ascii help page.

it should look like:

v.in.ascii in=points.txt out=new_map x=1 y=2 z=3 -z fs=, format=point

> Also, after importing how should i build a surface (TIN)

Look at the v.surf.* modules. (technically a raster surface not a TIN)

> and create a shaded surface?

r.shaded.relief or NVIZ.


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