[GRASS-user] i.segment and i.segment.stats errors

[Jamille Haarloo]

Thank you Markus,

I just got the i.segment results with Grass 7.6 (64 bit; r73480-35).

This is the output:
i.segment --overwrite group=DV4 at LUP1,IDM4 at LUP1,W2 at LUP1,W4 at LUP1
output=SegmW24IDM4DV4 threshold=0.25 minsize=5000 memory=10000
seeds=SegW24IDM4DV4 at LUP1 goodness=SegmW24IDM4DV4_goodn
Maximum number of iterations set to 50
Loading input bands...
Loading seeds from raster map <SegW24IDM4DV4>...
Processing pass 1...
Processing pass 2...
Processing pass 3...
Processing pass 4...
Processing pass 5...
Processing pass 6...
Processing pass 7...
Processing pass 8...
Processing pass 9...
Segmentation converged after 9 iterations
Assigning region IDs to remaining single-cell regions...
Merging segments smaller than 5000 cells...
Writing out segment IDs...
Writing out goodness of fit
ERROR: Region of size 635805 should be in search tree

On Thu, Oct 4, 2018 at 4:07 PM Markus Metz <markus.metz.giswork at gmail.com>
wrote:

> Can you please try with GRASS 7.6 64 bit [0] and report if the error still
> persists or not?
>
> Thanks,
>
> Markus M
>
> [0] https://wingrass.fsv.cvut.cz/grass76/x86_64/
>
> On Thu, Oct 4, 2018 at 5:07 PM Jamille Haarloo <j.r.haarloo at gmail.com>
> wrote:
> >
> > Dear Grass community,
> >
> > I have been experimenting with i.segment, i.segment.uspo and
> i.segment.stats on relatively small areas of a worldview-2 image.
> > After some success I tried i.segment and i.segment.stats on the entire
> area of 19875 ha, but I kept getting the same errors with i.segment.stats.
> I started using a mask to eliminate most of the matrix, to see if that
> helped. It did not, so I started the process again in i.segment but with
> the previous segmentation output as seed to reduce processing. This time I
> also got an error with i.segment in 2 attempts with different parameters. I
> looked for documentation, but I couldn't find any solutions and I rather
> not mess with the scripts. I do get a raster-output which looks ok, but
> i.segment.stats fails to create an attribute table for further analyses. My
> questions are: Is the area too big (too much pixels)? Are there too many
> segments? The count of the last output is 9054 segments. Or should I start
> the process again form the beginning without the seed assuming the Mask is
> not the problem? The processing might take several weeks though.
> >
> >  i.segment error:
> > ERROR: Region of size 501508 should be in search tree
> >
> > i.segment.stats errors:
> > ERROR: Error while executing: 'CREATE TABLE segmstat_tmp_vect_7968 (cat
> int, area double precision, compact_circle double precision, DV2_mean
> double precision, DV2_stddev double precision, DV2_variance double
> precision, DV2_coeff_var double precision, DV2_first_quart double
> precision, DV2_median double precision, DV2_third_quart double precision,
> DV2_perc_90 double precision, DV4_mean double precision, DV4_stddev double
> precision, DV4_variance double precision, DV4_coeff_var double precision,
> DV4_first_quart double precision, DV4_median double precision,
> DV4_third_quart double precision, DV4_perc_90 double precision, IDM2_mean
> double precision, IDM2_stddev double precision, IDM2_variance double
> precision, IDM2_coeff_var double precision, IDM2_first_quart double
> precision, IDM2_median double precision, IDM2_third_quart double precision,
> IDM2_perc_90 double precision, IDM4_mean double precision, IDM4_stddev
> double precision, IDM4_variance double precision, IDM4_coeff_var double
> precision, IDM4_first_quart double precision, IDM4_median double precision,
> IDM4_third_quart double precision, IDM4_perc_90 double precision, W2_mean
> double precision, W2_stddev double precision, W2_variance double precision,
> W2_coeff_var double precision, W2_first_quart double precision, W2_median
> double precision, W2_third_quart double precision, W2_perc_90 double
> precision, DV4_mean double precision, DV4_stddev double precision,
> DV4_variance double precision, DV4_coeff_var double precision,
> DV4_first_quart double precision, DV4_median double precision,
> DV4_third_quart double precision, DV4_perc_90 double precision,
> neighbors_count double precision, area_nbrmean double precision,
> area_nbrstddev double precision, compact_circle_nbrmean double precision,
> compact_circle_nbrstddev double precision, DV2_mean_nbrmean double
> precision, DV2_mean_nbrstddev double precision, DV2_stddev_nbrmean double
> precision, DV2_stddev_nbrstddev double precision, DV2_variance_nbrmean
> double precision, DV2_variance_nbrstddeGRASS_INFO_ERROR(7020,1):
> > Traceback (most recent call last):
> >   File "C:\Users\haarlooj\AppData\Roaming\GRASS7\addons/scri
> > pts/i.segment.stats.py", line 370, in <module>
> >     main()
> >   File "C:\Users\haarlooj\AppData\Roaming\GRASS7\addons/scri
> > pts/i.segment.stats.py", line 357, in main
> >     gscript.run_command('db.execute', input=insert_sql,
> > quiet=True)
> >   File "C:\Program Files\GRASS GIS
> > 7.4.0\etc\python\grass\script\core.py", line 421, in
> > run_command
> >     return handle_errors(returncode, returncode, args,
> > kwargs)
> >   File "C:\Program Files\GRASS GIS
> > 7.4.0\etc\python\grass\script\core.py", line 332, in
> > handle_errors
> >     returncode=returncode)
> > grass.exceptions.CalledModuleError: Module run None
> > ['db.execute', '--q', 'input=Z:\\GRASS_GIS\\Cottica_LUP\\LUP
> > 1\\.tmp/unknown\\7968.1'] ended with error
> > Process ended with non-zero return code 1. See errors in the
> > (error) output.
> >
> >
> > _______________________________________________
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> > grass-user at lists.osgeo.org
> > https://lists.osgeo.org/mailman/listinfo/grass-user
>
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