[GRASS-dev] [GRASS GIS] #3705: i.segment produces empty output

[GRASS GIS]

#3705: i.segment produces empty output
-------------------------------------+-------------------------
 Reporter:  martinl                  |      Owner:  grass-dev@…
     Type:  defect                   |     Status:  new
 Priority:  normal                   |  Milestone:
Component:  Imagery                  |    Version:  unspecified
 Keywords:  i.segment, empty output  |        CPU:  Unspecified
 Platform:  Unspecified              |
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 From G74:i.segment manual:

 ```
 i.group group=ortho_group input=ortho_2001_t792_1m at PERMANENT
 g.region -p raster=ortho_2001_t792_1m n=220446 s=220075 e=639151 w=638592
 i.segment group=ortho_group output=ortho_segs_l1 threshold=0.02
 ```

 The last command says

 ```
 i.segment complete. Number of segments created: 119346
 ```

 But output raster map is empty:

 ```
 r.info -r ortho_segs_l1
 min=NULL
 max=NULL
 ```

 All GRASS versions (7.7, 7.6, 7.4) seems to be affected.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3705>
GRASS GIS <https://grass.osgeo.org>