[GRASSLIST:308] Problem with i.gensigset (long)..

[Luca Casagrande]

Hi guys!
To extract some features from a raster map, i used the procedure i.gensigset + 
i.smap described on Markus book...

I did this:
1)Grouped the RGB files and created a subgroup with the same name.
2)With v.digit created a vector area over the feature i wanna to extract and 
converted to raster with v.to.rast:

[r.info]
Type of Map:  raster               Number of Categories: 0               
Data Type:    CELL                                                       
Rows:         2041                                                       
Columns:      2429                                                       
Total Cells:  4957589                                                    
Projection: Transverse Mercator (zone 0)                            
N: 4797638.330373    S: 4791539.0053286   Res: 2.98840032       
E: 2310585.86145648    W: 2303337.69094139   Res: 2.98401421    
Range of data:    min =  1 max = 1                                       
Data Source:                                                             
Vector Map: grano at Luca in mapset Luca                                   
Original Scale from Vector Map: 1:1                                     
Data Description:                                                        
generated by v.to.rast                                                  
Comments:                                                                
v.to.rast input="grano at Luca" output="grano" use="val" layer=1 value=\   
1 rows=4096

3) Run i.gensigset and created the signature files
4) Run i.smap using the same group/subgroup and the signature just created

                                                                             
    Type of Map:  raster               Number of Categories: 1               
    Data Type:    CELL                                                       
    Rows:         2041                                                       
    Columns:      2429                                                       
    Total Cells:  4957589                                                    
         Projection: Transverse Mercator (zone 0)                            
             N: 4797638.330373    S: 4791539.0053286   Res: 2.98840032       
             E: 2310585.86145648    W: 2303337.69094139   Res: 2.98401421    
    Range of data:    min =  1 max = 1                                       
                                                                             
    Data Source:                                                             
     Group/subgroup: 300090nuovo/300090nuovo                                 
     Sigset file: grano_sign                                                 
                                                                             
    Data Description:                                                        
     generated by i.smap                                                     

The file just created is a square purple, that covers all the region!

What i am missing?

P.S. the procedure with i.class, works fine...                  

-- 
"E' molto più bello sapere qualcosa di tutto, che tutto di una cosa (Blaise 
Pascal)."

GENTOO-GIS Development Team
jabber: casagrande at jabber.linux.it