[GRASS-dev] v.info Projection info

[Dylan Beaudette]

On Tuesday 24 October 2006 00:33, Huidae Cho wrote:
> On Tue, Oct 24, 2006 at 09:22:40AM +0200, Maciej Sieczka wrote:
> > Huidae Cho wrote:
> > > Hi,
> > >
> > > I found that Vect_open_old_head() does not set Map.proj:
> >
> > <snip>
> >
> > > For this reason, v.info always prints out "Projection: x,y (zone ...)"
> > > (Map.proj == 0 == PROJECTION_XY) regardless of its actual projection.
> > > It seems like to me there is no projection info in vector files.  If
> > > individual vector files cannot have a different projection from its
> > > location, why doesn't v.info use G_database_projection_name() like
> > > r.info does?
> >
> > Hi,
> >
> > Since this issue is rised, I'd like throw my 0,01 PLN in. Why, in the
> > first place, does r.info or v.info even try to print the projection
> > info? I don't think they should. It is pointless - all the maps within
> > one Location have the same projection anyway. For querying the
> > Location's projection info there is g.proj -p. And also the g.region
> > -p, but same as in case of *.info modules, I believe it shouldn't do
> > that - g.region should be concerned with the region extent and
> > resolution only. It would be enough if it just distunguished between
> > lat/long, projected and xy, and not go into ellipsoids/datums/zones
> > details and stuff - there is g.proj for that.
>
> I've been thinking about that.  I personally like only one way for one
> task.  We can avoid inconsistent/erroneous outputs in this way.
>
> Huidae
>
> > What do you think? Removing this code alltogether from *.info would let
> > us get rid of bogus, missleading r.info output in the kind of
> > "Projection: Latitude-Longitude (zone 0)" as well. Propably not a plan
> > for GRASS 6, but how about 7?
> >
> > Maciek
>

I'd throw in my $0.02 as well: I agree with Maciek and Huidae.

Now the question remains: how much money do we have now?
$0.02 + 0,01 PLN + ???

hehe

cheers,


-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341