[GRASS-user] i.cluster and i.maxlik with grayscale image

[Micha Silver]

Happy New Year to all!


I want to run some r.le analyses on rasters I will create from two 
ortho-photo images. The newer ortho-photo is full color, so when 
importing into GRASS I get the three RGB bands. So I make an image group 
and subgroup with the three bands and I can do the clustering.  However 
The older image is a B/W tiff, so it becomes a single grayscale raster.  
But the classification modules require a group with more than one band. 
What's the best way to handle this?


Thanks,

Micha