[R] Remove columns by name data[-c("subj","drug")]

[Peter Dalgaard BSA]

"Dieter Menne" <dieter.menne at menne-biomed.de> writes:

> Is there an easy way to remove data frame columns
> by name instead of by index? The following gives
> the idea
> 
> remove<-c("subj","drug")
> data[-remove]
> 
> I found a solution with a few evals and substitutes,
> similar to that used in reshapeLong, but there must
> be an easier way out.

subset(data, select=-c(subj, drug))

or

remove<-c("subj","drug")
data[-match(remove, names(data))]
-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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