[R] Re: coding factor replicates

Peter Dalgaard BSA p.dalgaard at biostat.ku.dk
Thu Jan 24 12:25:23 CET 2002


Peter Dalgaard BSA <p.dalgaard at biostat.ku.dk> writes:

> Now we can do (breaks horribly if there's an empty factor level, though):
> 
> unsplit(lapply(table(f), seq)))

Oops, make that:

 unsplit(lapply(table(f), seq)), f)

> 
> and the within-group z-score from the other day would become
> 
> unsplit(tapply(x,f,scale),f)


-- 
   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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