Hi! Today using i.gensigset, I bombed into this strange behaviour as the one discussed in the past
<http://lists.osgeo.org/pipermail/grass-user/2010-April/055639.html> where the module did not generate any signatures. Anyone that knows what's going on? I have tried various stuff without success. I also tried in the "imagery60/user1" location/mapset using the Spot subsets (spot.ms.1, spot.ms2, spot.ms.3), and it just works fine! Thanks, N --- A test-case: # where am I g.proj -p -PROJ_INFO------------------------------------------------- name : Universal Transverse Mercator proj : utm datum : wgs84 ellps : wgs84 zone : 48 no_defs : defined -PROJ_UNITS------------------------------------------------ unit : metre units : metres meters : 1 # region g.region -p projection: 1 (UTM) zone: 48 datum: wgs84 ellipsoid: wgs84 north: 178800 south: 137200 west: 163500 east: 225200 nsres: 100 ewres: 100 rows: 416 cols: 617 cells: 256672 # Top of Canopy Reflectance (from a Landsat 7 scene) for Band in `g.mlist type=rast pat=ToCR?`; do r.info -r ${Band}; done raster map(s) available in mapset <classification_trials>: min=0.00124375210840126 max=0.35849866608563 min=0 max=0.35782345515399 min=0 max=0.379788238688478 min=0.00243176894430602 max=0.467877978869486 min=0.00498972477821269 max=0.405811742521198 min=263.377037572447 max=301.084746200043 min=0.00636355695948437 max=0.457282493983423 # a random samples map lies inside r.info -gr random_trainingmap north=178800 south=137200 east=225200 west=163500 nsres=100 ewres=100 rows=416 cols=617 cells=256672 datatype=CELL min=1 max=5 # and is not empty r.stats -cp random_trainingmap 100% 1 155 0.06% 2 203 0.08% 3 90 0.04% 4 45 0.02% 5 104 0.04% * 256075 99.77% # grouping ToCRs i.group group=spectral subgroup=123457 input=ToCR1,ToCR2,ToCR3,ToCR4,ToCR5,ToCR7 [..] # attempting to generate signatures i.gensigset trainingmap=random_trainingmap group=spectral subgroup=123457 signaturefile=123457 Finding training classes... 100% 5 classes found Reading raster maps... 100% Clustering class 1 (155 pixels)... WARNING: Removed a singular subsignature number 1 (4 remain) WARNING: Removed a singular subsignature number 1 (3 remain) WARNING: Removed a singular subsignature number 1 (2 remain) WARNING: Removed a singular subsignature number 1 (1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters WARNING: Removed a singular subsignature number 1 (-1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters Number of subclasses is 0 Clustering class 2 (203 pixels)... WARNING: Removed a singular subsignature number 1 (4 remain) WARNING: Removed a singular subsignature number 1 (3 remain) WARNING: Removed a singular subsignature number 1 (2 remain) WARNING: Removed a singular subsignature number 1 (1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters WARNING: Removed a singular subsignature number 1 (-1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters Number of subclasses is 0 Clustering class 3 (90 pixels)... WARNING: Removed a singular subsignature number 1 (4 remain) WARNING: Removed a singular subsignature number 1 (3 remain) WARNING: Removed a singular subsignature number 1 (2 remain) WARNING: Removed a singular subsignature number 1 (1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters WARNING: Removed a singular subsignature number 1 (-1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters Number of subclasses is 0 Clustering class 4 (45 pixels)... WARNING: Too many subclasses for class index 4 Number of subclasses set to 4 WARNING: Removed a singular subsignature number 1 (3 remain) WARNING: Removed a singular subsignature number 1 (2 remain) WARNING: Removed a singular subsignature number 1 (1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters WARNING: Removed a singular subsignature number 1 (-1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters Number of subclasses is 0 Clustering class 5 (104 pixels)... WARNING: Removed a singular subsignature number 1 (4 remain) WARNING: Removed a singular subsignature number 1 (3 remain) WARNING: Removed a singular subsignature number 1 (2 remain) WARNING: Removed a singular subsignature number 1 (1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters WARNING: Removed a singular subsignature number 1 (-1 remain) WARNING: Unreliable clustering. Try a smaller initial number of clusters Number of subclasses is 0 i.gensigset complete. _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
