problems with "gensigset" - no Sig-file

[E.Friebe]

Hallo,

I have got some Problems with i.gensigset.
GRASS does not write a signature-file ( when I use SMAP in second step, the 
message is: "sorry <sigfile>is not a valid parameter."
Some lines of the gensigset-output are noticed afterwards.

I used the same training-file for maxlik-Klassifizierung and it runs.
( but the Klassification is not so good because of too much mixed pixels in some 
classes, for example "wood"
classes: 1-villages; 2-fields/corn; 3- green fields; 4-wood; 5-gras; 
6-bushes, 7-water; 8-street; 9-vignard
Only the classes 2 and 3 are without "Warning" .

It would be very nice, if somebody can help me to find the problem.
Herzliche Grüße
Elke


output gensigset:

clustering class 1, with 1100 pixels
Warning:Removed a singular subsignature; number 9; 9 remain
Warning:Removed a singular subsignature; number 1; 8 remain
Warning:Removed a singular subsignature; number 7; 7 remain
Warning:Removed a singular subsignature; number 2; 6 remain


Subclasses = 1; Rissanen = 4.575509; Solution: Number of subclasses is 1

Clustering class 2, with 398 pixels
Subclass = 10; Rissanen = 4.683966; combining Subclasses (3,5)
Subclass =  9; Rissanen = 4.661144; combining Subclasses (1,7)
Subclass =  8; Rissanen = 4.635386; combining Subclasses (2,4)
Subclass =  7; Rissanen = 4.609367; combining Subclasses (4,7)


Subclass =  1; Rissanen = 4.682793; Solution: Number of subclass is 6


Clustering class 6, with 237 pixels
Warning:Removed a singular subsignature; number 6; 9 remain
Subclass =  9; Rissanen = 4.906709; combining Subclasses (1,8)


Clustering clasWriting signature file [klass18SigSM] ...
s 7, with 312 pixels
Warning:Removed a singular subsignature; number 1; 9 remain
Warning:Removed a singular subsignature; number 1; 8 remain
Warning:Removed a singular subsignature; number 1; 7 remain