[GRASSLIST:5625] Creating DTM from shapefiles

[Māris Nartišs]

Hi,

I'm beginner with Grass and I have beginners problems :)

I have 2 shape files one with lines and second with points. Both of
them have HEIGHT parameter in attribute tables (lines - int, points -
float (double precision)). To do some modeling, I need to create
surface from those files.
I read some docs and understood, that best surface creation algorithm
in Grass it RST.
Now I have Q - how to combine both source vector data layers to feed
them to v.surf.rst?
I was trying 2 solutions, but, due to lack of knowledge, both of them
where dead ends.
1) Using v.patch to combine both vector data sources
2) Convert lines to points and then combine them with v.patch
both worked fine but when I used d.what.vect I got only "Database
connection not defined".

Any ideas, links to howtos etc. welcome.

Maybe as a newbie with some ArcView background I'm unable to
understand some Grass specific things, who cause my problems, but
currently Grass docs aren't very helpful, mainly cuz they a bit
outdated :(

grass-6.0.0_beta1 compiled with tcltk, png, jpeg, tiff, motif, gdal,
blas, lapack, X, fftw, truetype, opengl
gdal-1.2.5 compiled with geos, jasper, jpeg, png, geotiff
Linux gentoo 2.4.26-gentoo-r9 #2 Tue Sep 28 12:51:29 EEST 2004 i686
AMD Athlon(tm) XP 2500+ AuthenticAMD GNU/Linux


TNX for reading this, 
Maris.