[GRASSLIST:5633] Re: Creating DTM from shapefiles

[Māris Nartišs]

TNX for quick respnse and explanation. I will work with Grass 5.4.0
instead of 6.0.0 to prepeare DTMs.

Actualy as for newcomer to Grass I found lots of undocumented gochas
in Grass. Dosumentation not always fuly explains output of commands,
influence of aviable flags etc. I spend lot of time just experimenting
with different things to find out what they do. I hope on better
documentation after some time.

BR,
Maris.

On Thu, 3 Feb 2005 19:07:16 +0100, Maciek Sieczka <werchowyna at pf.pl> wrote:
> From: "Maris Nartiss" <maris.nartiss at gmail.com>
> > Hi,
> >
> v.patch in 5.7/6.0 is not operational yet. You'll find some workarounds in
> recent archives of grass5 list. You can also try patching two such vector
> layers (points and lines) with v.patch in Grass 5.4/5.5. It should preserve
> labels of both input layers properly. But always check whether the labels
> were really preserved as they should. It happened to me with one particular
> dataset that they were not for some reason (though maybe it was the dataset
> fault). If all is ok then import into 6.0 with v.convert.
> 
> v.patch doesn't output any database - so there is nothing to be connected.
> Moreover the vector layer resulting from v.patch in 5.7/6.0 has all the cats
> of the input layers preserved, so you result in having lots of features with
> the same cat, thus it is not virtually possible to prepare an appropriate
> database manually. All you get in an output of that v.patch is a vectorial
> drawing actually.
> 
> v.patch manual should contain some remarks on these issues until it's fixed
> IMHO.
> 
> > TNX for reading this,
> > Maris.
> 
> Cheers
> Maciek
> 
>