[GRASS-user] v.clean error threshold under 2 meters

[Markus Neteler]

Hi Pierluigi,

On Thu, Apr 2, 2015 at 11:34 AM, Pierluigi De Rosa
<pierluigi.derosa at gfosservices.it> wrote:
> Dear all,
>
> I have a unusual system unit.

Please tell us which :-)

> I'm working on a parcel unit for rill
> analysis. I'm able to extract the network and I would prune a bit the
> resulting output.
> All the parcel I'm studying is 10 meters wide and 22 meters long, the mean
> average distance between the streams is about 1-2 centimetres. I need to
> remove nodes in a threshold of 0.005 meters (half centimetre) but I'm having
> problem assigning such threshold to v.clean
> I'm running GRASS7.
> If I use these thresholds ( 0.005, 0.01,1,) no points are removed.
> The first valid working threshold is 2 meters.
>
> Maybe v.clean does not accept value under 1 meter or I'm doing something
> wrong?

v.clean should accept "any" value (and we have used GRASS GIS with
microscope data in the nanometer scale).

Could you post the output of

g.region -p
g.proj -w
?

best
Markus