[GRASS-user] i.segment

[Moritz Lennert]

On 30/06/14 12:09, Francesco Nex wrote:
> Hi,
>
> My name is Francesco and I'm very new with GRASS.
> I tried to use the i.segment command and I got a problem.
> The command lines I used are the following:
>
> i.segment -d group=060140_file_OFD output=060140_file_segs_L1 threshold=0.1
> i.segment -d group=060140_file_OFD output=060140_file_segs_L2
> threshold=0.2 seeds=060140_file_segs_L1 min=2
>
> the lines are very similar to the example provided in the tutorial:
>
> http://grass.osgeo.org/grass70/manuals/i.segment.html
>
> Anyway, when I run the second line, the output window return the
> following message:
>
> WARNING: Region consists of only one cell, nothing to update

This means exactly what it says: the working region (i.e. the grid in 
which you want to work) consists of only one cell.

Update your region with g.region before running i.segment.

Moritz