[GRASS-user] Usage of r.random with Land cover maps

[António Rocha]

dear all,
I have a land cover map (values from 1 till 15) and I want to extract 
randomly 100 pixels from each class. I tried to use the cover option but 
it only produced an additional column with values from the cover map. My 
question is: how can I extract exactly 100 pixels from each class 
without having to create a specific cover map for each class?

Thank you
Regards,
Antonio