[GRASS-dev] i.segment: invalid region id 0

[Moritz Lennert]

Proxmox(Openvz) container running Debian testing, 200GB disk space, 10GB 
RAM, 4 i7 CPUs

 > g.region -p
projection: 1 (UTM)
zone:       33
datum:      wgs84
ellipsoid:  wgs84
north:      4876400
south:      4849792
west:       610056
east:       634648
nsres:      0.5
ewres:      0.5
rows:       53216
cols:       49184
cells:      2617375744

 > r.univar 2013_04_24_orthorectified_mosaic_PAN_img02
  100%
total null and non-null cells: 2617375744
total null cells: 2061647833

Of the non-null cells:
----------------------
n: 555727911

 > i.group -l pan_r_ir
group <pan_r_ir> references the following raster maps
-------------
<2013_04_24_orthorectified_mosaic_PAN_img02 at PERMANENT>
<2013_04_24_orthorectified_mosaic_XS_img02.5 at PERMANENT>
<2013_04_24_orthorectified_mosaic_XS_img02.7 at PERMANENT>


 > time i.segment -w group=pan_r_ir out=seg_weighted_pan_r_ir 
threshold=0.01 memory=8192
Loading input bands...
Pass 1:
ERROR: Invalid region id 0

I still have over 100GB of disk space available.

What could be the problem ?

Moritz