Dear Christopher,

r.reclass doesn't complain about assigning new values to non-existing 
categories; I suppose it just ignores them. And to satisfy your 
curiosity: I use GRASS for archaeological predictive modelling, 
'environmental analysis' of archaeological sites and what we call 
archaeological information systems. This is about as concise as I can 
get - if you want to know more, let's continue the conversation off the 
GRASS users' list.

Philip Verhagen
-- 


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