[GRASS-user] v.edit tool=merge

[Markus Metz]

On Tue, Sep 20, 2016 at 3:06 PM, Vincent Bain <bain at toraval.fr> wrote:
> Hi,
> on a fresh (r69498) trunk version of grass, I have a problem running a
> v.edit command on a map.
> Given a vector map composed of 200 contour lines splitted in roughly
> 17000 line segments (adjacent nodes perfectly overlapping), I need to
> "unsplit" these contours. If I try to run the following command :
>
>         v.edit map=contours type=line tool=merge snap=vertex -r cats=0
>
> it looks line it never ends, i.e. the process does not return any error,
> RAM and CPU usages appear stable (not huge). After tens of minutes it
> still hangs up. I finally have to interrupt, then chucking out the
> topology-damaged map.

v.edit tool=merge hangs for zero-length lines. Such contours can occur
on peaks and in pits. Fixed in all G7 branches with r69556-8.

Markus M

>
> Running the same command on grass6.4 (after v.build the source map), it
> runs successfully within some minutes.
>
> Before I open a ticket, would anyone wish to give a try to my data ?
>
> Vincent.
>
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