[R] Cutting vectors

[Peter Dalgaard BSA]

"Patrik Waldmann" <Patrik.Waldmann at sysbot.lu.se> writes:

> > Patrik Waldmann wrote:
> > 
> > > I have one factor with say five levels (fact) of different size
> > > and a corresponding variable (var). I randomly generate five new
> > > levels (nfact ex. 2,2,1,5,4). What I would like to do is to extract
> > > the corresponding variable values into a new variable (nvar). I did
> > > try the following, why doesn't it work?  nvar<-var[fact==nfact[ ]]

> > 
> > ..I ain't sure I get evrything but try
> > 
> > 
> > nvar<-var[which(fact == nfact)]
> > 
> 
> Gives me the same error message as before (and creates a meaningless vector): 

I think you need to give us an example of what you're trying to
achieve, including sample of what might be in fact, nfact, and var as
well as how you expect the result to look. 

-- 
   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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