[GRASS-dev] [grass-code R][510] v.to.db option=length: please report line's 3d length

[Martin Landa]

Ahoj Maciek,

v.distance should be fixed in CVS (not tested with 3d lines...)

Martin

2007/10/13, Maciej Sieczka <tutey at o2.pl>:
> Martin Landa wrote:
>
> > should be fixed in CVS.
>
> After brief testing looks OK. Thanks much Martin!
>
> Soon after I noticed v.to.db didn't report 3d length, I had
> the same problem with v.distance (looking for a workaround),
> which I noted down in the same ticket. Copying the note below:
>
> Same request applies to v.distance. It apparently assumes
> input points are flat too. Consider 2 3d points:
>
> $ v.out.ascii start_3d
> 571600|5722275.5|1|1
>
> $ v.out.ascii end_3d
> 571610|5722275.5|4|1
>
> The distance between them is about 10.440307. Yet,
> v.distance claims it's round 10:
>
> $ v.distance -p from=start_3d to=end_3d  upload=cat,dist
> col=to_cat,dist
> from_cat|to_cat|dist
> 1|1|10.000000
>
> Maciek
>


-- 
Martin Landa <landa.martin at gmail.com> * http://gama.fsv.cvut.cz/~landa *