Below kept only timings and number of created segments (from previously posted tests as well as a few new ones), just as a reference.
All tests above threshold=0.95 fail to deliver. The extreme instruction threshold=0.95 derives 70 segments. Above this, I think that everything would be merged in one segment, a result for which i.segment is not required anyway. How this is related with the error message... ? In any case, if wanted, I will try during the weekend to replicate a Huge region, as the one Moritz tested with a "rational" threshold (close to zero). Thank you for this wonderful module! Nikos Nikos Alexandris wrote: > # ################################### > # A series of tests using default RAM > > # threshold 0.1 > Segmentation converged after 11 iterations. > Writing out segment IDs > i.segment complete. Number of segments created: 25407 > > real 8m9.122s > user 8m5.582s > sys 0m0.296s > # threshold 0.3 > Segmentation converged after 11 iterations. > Writing out segment IDs > i.segment complete. Number of segments created: 11684 > > real 12m20.273s > user 12m19.466s > sys 0m0.256s > > # threshold 0.5 > Segmentation converged after 12 iterations. > Writing out segment IDs > i.segment complete. Number of segments created: 5495 > > real 17m35.330s > user 17m34.302s > sys 0m0.264s > > # threshold 0.7 > Segmentation converged after 12 iterations. > Writing out segment IDs > i.segment complete. Number of segments created: 4911 > > real 18m15.143s > user 18m11.188s > sys 0m0.300s > > # threshold 0.9 > Segmentation converged after 13 iterations. > Writing out segment IDs > i.segment complete. Number of segments created: 1276 > > real 30m30.619s > user 30m29.010s > sys 0m0.272s # threshold 0.95 time i.segment group=pan out=pan_segmented_threshold_0.95_memory_30000 threshold=0.95 memory=30000 .. Segmentation converged after 13 iterations. Writing out segment IDs i.segment complete. Number of segments created: 70 real 45m48.901s user 45m45.064s sys 0m0.512s # threshold 0.955 (I guess identical to 0.95) time i.segment group=pan out=pan_segmented_threshold_0.955_memory_30000 threshold=0.955 memory=30000 .. Segmentation converged after 13 iterations. Writing out segment IDs i.segment complete. Number of segments created: 70 real 45m59.356s user 45m55.280s sys 0m0.584s # threshold 0.96 time i.segment group=pan out=pan_segmented_threshold_0.96_memory_30000 threshold=0.96 memory=30000 .. Pass 13: ERROR: Invalid region id 0 real 48m0.629s user 47m56.724s sys 0m0.472s # threshold 0.97 time i.segment group=pan out=pan_segmented_threshold_0.97_memory_30000 threshold=0.97 memory=30000 .. Pass 11: 40% Pass 12: Pass 13: ERROR: Invalid region id 0 real 47m58.069s user 47m53.976s sys 0m0.628s # threshold 0.99 time i.segment group=pan out=pan_segmented_threshold_0.99_memory_30000 threshold=0.99 memory=30000 .. Pass 13: ERROR: Invalid region id 0 real 37m24.352s user 37m14.000s sys 0m0.784s time i.segment group=pan out=pan_segmented_threshold_0.99_memory_300 threshold=0.99 .. Pass 13: ERROR: Invalid region id 0 real 41m42.828s user 41m39.932s sys 0m0.680s _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
