[GRASSLIST:7414] Re: v.out.ascii format question

[Bart]

On 6/17/05, Hamish <hamish_nospam at yahoo.com> wrote:
> > I'm trying to figure out exactly what the v.out.ascii
> > (format=standard) outputs. The v.out.ascii or
> > v.in.ascii help pages don't directly help - they
> > don't handle the things that come after the
> > coordinates.
> >
> > I seem to have a few lines without coordinates in
> > my data (spearfish60, actually), which I'll just assume
> > is allowed, but more interestingly, I can't make full
> > sense out of what seem to be category lines after
> > the coordinates of each feature. What do the two
> > numbers mean? Perhaps id (of what?) and category?
> > What happens when there is more than one line of these?
> >
> > Relatedly, if those are categories I don't know
> > what to make of the "v.out.ascii does not copy
> > the dig_cats [...]" comment in the v.out.ascii
> > documentation. (I use grass 6.0.0, by the way)
> >
> > Basically I'd like to know what the output format
> > is, exactly. A little 'why' would be nice too:)
> 
> 
> The vector ascii format is quickly described on the v.in.ascii help
> page and that links to the format specification:
> 
> http://grass.ibiblio.org/grass61/manuals/html61_user/v.in.ascii.html
> http://freegis.org/cgi-bin/viewcvs.cgi/~checkout~/grass6/doc/vector/vector.html#ascii
> 

Okay, thanks...
But what are the field ID's about? Once exported I doubt
they're useful for database reference. I don't suppose there's
any real comparability between fields in different features in
the same map? Are they just a dummy enumeration, or more?


Thanks,
--Bart