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

#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 |
-------------------------------------+-------------------------
From G74:i.segment manual:

 i.group group=ortho_group input=ortho_2001_t792_1m@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&gt;
GRASS GIS <https://grass.osgeo.org>

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

Old description:

From G74:i.segment manual:

i.group group=ortho_group input=ortho_2001_t792_1m@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.

New description:

From G74:i.segment manual:

{{{
i.group group=ortho_group input=ortho_2001_t792_1m@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#comment:1&gt;
GRASS GIS <https://grass.osgeo.org>

#3705: i.segment produces empty output
--------------------------+-------------------------------------
  Reporter: martinl | Owner: grass-dev@…
      Type: defect | Status: new
  Priority: normal | Milestone: 7.4.4
Component: Imagery | Version: unspecified
Resolution: | Keywords: i.segment, empty output
       CPU: Unspecified | Platform: Unspecified
--------------------------+-------------------------------------
Changes (by martinl):

* milestone: => 7.4.4

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3705#comment:2&gt;
GRASS GIS <https://grass.osgeo.org>

#3705: i.segment produces empty output
--------------------------+-------------------------------------
  Reporter: martinl | Owner: grass-dev@…
      Type: defect | Status: new
  Priority: normal | Milestone: 7.4.4
Component: Imagery | Version: unspecified
Resolution: | Keywords: i.segment, empty output
       CPU: Unspecified | Platform: Unspecified
--------------------------+-------------------------------------

Comment (by mlennert):

See #3683. Normally this was solved.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3705#comment:3&gt;
GRASS GIS <https://grass.osgeo.org>

#3705: i.segment produces empty output
--------------------------+-------------------------------------
  Reporter: martinl | Owner: grass-dev@…
      Type: defect | Status: closed
  Priority: normal | Milestone: 7.4.4
Component: Imagery | Version: unspecified
Resolution: duplicate | Keywords: i.segment, empty output
       CPU: Unspecified | Platform: Unspecified
--------------------------+-------------------------------------
Changes (by martinl):

* status: new => closed
* resolution: => duplicate

Comment:

Ops, I overlooked this ticket.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3705#comment:4&gt;
GRASS GIS <https://grass.osgeo.org>