Chuck Cleland <[EMAIL PROTECTED]> writes:

> test_frame[,"col3"]
> 
> or
> 
> subset(test_frame, select = col3)

or 

test_frame$col3

-- 
   O__  ---- Peter Dalgaard             Ă˜ster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED])                  FAX: (+45) 35327907

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