[GRASS-user] v.hull ignoring 'where' argument

[Markus Neteler]

On Thu, Feb 22, 2018 at 12:39 PM, Markus Metz
<markus.metz.giswork at gmail.com> wrote:
> On Thu, Feb 22, 2018 at 10:05 AM, Helmut Kudrnovsky <hellik at web.de> wrote:
>> Vilem Ded wrote
...
>> > My questions:
>> > Is there a way how to effectively apply function(command) by group?
>> > Is the v.hull function supposed to work like this (ingnoring where and
>> > cat arguments)?

...

> From the manual:
> layer=string
>     Layer number or name ('-1' for all layers)
>     Default: -1
>
> You need to set the layer option to some positive number, otherwise all
> points from all layers will be used and the cats and where options are
> ignored.

I have added a related note to the v.hull manual page (maybe others
should be extended as well?).

markusN