Hello Micha, I put r.info -r amostras as sugested, get the following: min=112 max=512
(This values are index to my classes.) JD On Tue, Apr 6, 2010 at 4:39 PM, Micha Silver <[email protected]> wrote: > Nikos Alexandris wrote: > > (sorry for re-sorting the message, just to keep it easy to follow-up) >> >> joel dinis: >> >> >>> > I trying to classify remote sensing imagery, and >>> > I thought to try the i.smap module, but >>> > when I run the i.gensigset, >>> >>> >> >> Nikos Alexandris: >> >> >>> Please, could you copy-paste the exact command you used? >>> Does the "maxsig=" (e.g. maxsig=20) make any difference? >>> >>> >> >> joel dinis: >> >> >> >>> In fact, I put maxsig=30. >>> i.gensigset trainingmap=amostras group=grupo subgroup=subgrupo >>> signaturefile=assinaturas maxsig=30 >>> >>> >> >> What about smaller maxsig's, like: >> >> - maxsig=25 >> - maxsig=20 >> - maxsig=15 >> >> ? >> >> Nikos >> >> >> > Also it might help to know what is contained in the trainingmap. i.e: > r.info -r amostras > >> >> >>> > I always >>> > get the same problem: >>> > ... >>> > Removed a singular subsignature number 1 (9 remain) >>> > Removed a singular subsignature number 1 (8 remain) >>> > Removed a singular subsignature number 1 (7 remain) >>> > Removed a singular subsignature number 1 (6 remain) >>> > Removed a singular subsignature number 1 (5 remain) >>> > Removed a singular subsignature number 1 (4 remain) >>> > Removed a singular subsignature number 1 (3 remain) >>> > Removed a singular subsignature number 1 (2 remain) >>> > Removed a singular subsignature number 1 (1 remain) >>> > Unreliable clustering. Try a smaller initial number of >>> clusters >>> > Removed a singular subsignature number 1 (-1 remain) >>> > Unreliable clustering. Try a smaller initial number of >>> clusters >>> > Number of subclasses is 0 >>> > Clustering class 12 (184 pixels)... >>> > Removed a singular subsignature number 1 (9 remain) >>> > Removed a singular subsignature number 1 (8 remain) >>> > Removed a singular subsignature number 1 (7 remain) >>> > Removed a singular subsignature number 1 (6 remain) >>> > Removed a singular subsignature number 1 (5 remain) >>> > Removed a singular subsignature number 1 (4 remain) >>> > Removed a singular subsignature number 1 (3 remain) >>> > Removed a singular subsignature number 1 (2 remain) >>> > Removed a singular subsignature number 1 (1 remain) >>> > Unreliable clustering. Try a smaller initial number of >>> clusters >>> > Removed a singular subsignature number 1 (-1 remain) >>> > Unreliable clustering. Try a smaller initial number of >>> clusters >>> > Number of subclasses is 0 >>> > i.gensigset complete. >>> > >>> > And afterwards the signature file doesn't have any >>> > spectral information. I really don't understand whats >>> happening >>> > and the cause to this outcome. >>> > >>> > Can anyone solve this "enigma"? >>> > >>> > Ps: I don't know if this information is important: I >>> collected >>> > about 450 samples distributed by 10 classes. I may also >>> > add that the average number of pixels per sample is around >>> 50. >>> > >>> > And thanks list, for the previous tips: they were very >>> useful. >>> >>> >> >> >> >> _______________________________________________ >> grass-user mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/grass-user >> >> This mail was received via Mail-SeCure System. >> >> >> >> > > > -- > Micha Silver > Arava Development Co. +972-52-3665918 > http://www.surfaces.co.il > > >
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