[GRASS-user] How do you list/remobe subgroups of a group?

GRASS GRASS user
1

Why can't we list subgroups of a specific group? Even more important, I
think, is that there is no option to remove subgroups.

Is it ok to remove subgroups manually? (e.g. "rm -r
~/grassdb/project/location/mapset/group/somegroup/somesubgroup")

Is there a reason for not having these options?

Thank you, Nikos

2

On Wed, Oct 8, 2008 at 2:22 PM, Nikos Alexandris
<nikos.alexandris@felis.uni-freiburg.de> wrote:

Why can't we list subgroups of a specific group? Even more important, I
think, is that there is no option to remove subgroups.

Is it ok to remove subgroups manually? (e.g. "rm -r
~/grassdb/project/location/mapset/group/somegroup/somesubgroup")

Is there a reason for not having these options?

Are you using an oldish GRASS version?
http://grass.osgeo.org/grass64/manuals/html64_user/i.group.html

i.group [-rlg] group=name [subgroup=string] [input=name[,name,...]]
[--verbose] [--quiet]
Flags:
-r
    Remove selected files from specified group
-l
    List files from specified (sub)group (fancy)
-g
    List files from specified (sub)group (shell script style)

Or does it *fail*?

Best
Markus

3

On Wed, 2008-10-08 at 16:05 +0200, Markus Neteler wrote:

On Wed, Oct 8, 2008 at 2:22 PM, Nikos Alexandris
<nikos.alexandris@felis.uni-freiburg.de> wrote:
> Why can't we list subgroups of a specific group? Even more important, I
> think, is that there is no option to remove subgroups.
>
> Is it ok to remove subgroups manually? (e.g. "rm -r
> ~/grassdb/project/location/mapset/group/somegroup/somesubgroup")
>
> Is there a reason for not having these options?

Are you using an oldish GRASS version?
http://grass.osgeo.org/grass64/manuals/html64_user/i.group.html

i.group [-rlg] group=name [subgroup=string] [input=name[,name,...]]
[--verbose] [--quiet]
Flags:
-r
    Remove selected files from specified group
-l
    List files from specified (sub)group (fancy)
-g
    List files from specified (sub)group (shell script style)

Or does it *fail*?

Best
Markus

Hi Markus!

It works. What I like to do is (using fakenames here) for example:
#list all subgroups of group=pca
g.list -sub group=pca

# or maybe
g.list type=subgroup group=pca

# output is a dozzen of subgroups, let's say:
pca_all
pca_half
pca_a
pca_b
pca_c
[...]

# then remove one of them
g.remove group=pca subgroup=pca_b

I imagine something like this. Wouldn't it be useful?

Best regards, Nikos