[R] Cutting vectors

[Patrik Waldmann]

> 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): 

Warning messages: 
1: longer object length
        is not a multiple of shorter object length in: is.na(e1) | is.na(e2) 
2: longer object length
        is not a multiple of shorter object length in: ==.default(fact, nfact)

Has this something to with the non-equal size of the 'cuttings'?

Patrik




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