[GRASS-user] A problem with i.gensigset.

[joel dinis]

It remains.

I tried, as you sugested, and the problem
remains.

...
Clustering class 9 (4994 pixels)...
Removed a singular subsignature number 1 (24 remain)
Removed a singular subsignature number 1 (23 remain)
Removed a singular subsignature number 1 (22 remain)
Removed a singular subsignature number 1 (21 remain)
Removed a singular subsignature number 1 (20 remain)
Removed a singular subsignature number 1 (19 remain)
Removed a singular subsignature number 1 (18 remain)
Removed a singular subsignature number 1 (17 remain)
Removed a singular subsignature number 1 (16 remain)
Removed a singular subsignature number 1 (15 remain)
Removed a singular subsignature number 1 (14 remain)
Removed a singular subsignature number 1 (13 remain)
Removed a singular subsignature number 1 (12 remain)
Removed a singular subsignature number 1 (11 remain)
Removed a singular subsignature number 1 (10 remain)
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 10 (2147 pixels)...
Removed a singular subsignature number 1 (24 remain)
Removed a singular subsignature number 1 (23 remain)
Removed a singular subsignature number 1 (22 remain)
Removed a singular subsignature number 1 (21 remain)
Removed a singular subsignature number 1 (20 remain)
Removed a singular subsignature number 1 (19 remain)
Removed a singular subsignature number 1 (18 remain)
Removed a singular subsignature number 1 (17 remain)
Removed a singular subsignature number 1 (16 remain)
Removed a singular subsignature number 1 (15 remain)
Removed a singular subsignature number 1 (14 remain)
Removed a singular subsignature number 1 (13 remain)
Removed a singular subsignature number 1 (12 remain)
Removed a singular subsignature number 1 (11 remain)
Removed a singular subsignature number 1 (10 remain)
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 11 (266 pixels)...
Removed a singular subsignature number 1 (24 remain)
Removed a singular subsignature number 1 (23 remain)
Removed a singular subsignature number 1 (22 remain)
Removed a singular subsignature number 1 (21 remain)
Removed a singular subsignature number 1 (20 remain)
Removed a singular subsignature number 1 (19 remain)
Removed a singular subsignature number 1 (18 remain)
Removed a singular subsignature number 1 (17 remain)
Removed a singular subsignature number 1 (16 remain)
Removed a singular subsignature number 1 (15 remain)
Removed a singular subsignature number 1 (14 remain)
Removed a singular subsignature number 1 (13 remain)
Removed a singular subsignature number 1 (12 remain)
Removed a singular subsignature number 1 (11 remain)
Removed a singular subsignature number 1 (10 remain)
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)...
Too many subclasses for class index 12
Number of subclasses set to 21
Removed a singular subsignature number 1 (20 remain)
Removed a singular subsignature number 1 (19 remain)
Removed a singular subsignature number 1 (18 remain)
Removed a singular subsignature number 1 (17 remain)
Removed a singular subsignature number 1 (16 remain)
Removed a singular subsignature number 1 (15 remain)
Removed a singular subsignature number 1 (14 remain)
Removed a singular subsignature number 1 (13 remain)
Removed a singular subsignature number 1 (12 remain)
Removed a singular subsignature number 1 (11 remain)
Removed a singular subsignature number 1 (10 remain)
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.

Yes, this happen to all the classes...

Maybe is something prior to the i.gensigset run.
I'll investigate.



On Tue, Apr 6, 2010 at 4:33 PM, Nikos Alexandris <
nikos.alexandris at felis.uni-freiburg.de> 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
>
>
> >
> >         >  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.
>
>
>
>
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