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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