[R] Slight problem in sort

[Peter Dalgaard BSA]

Frank E Harrell Jr <fharrell at virginia.edu> writes:

> I get
> 
> > sort(c(3,1,NA))
> [1] 1 3
> 
> Shouldn't NAs be retained by default?

Not according to the documentation...

     sort(x, partial = NULL, na.last = NA, decreasing = FALSE,
          method = c("shell", "quick"), index.return = FALSE)

 na.last: for controlling the treatment of `NA's. If `TRUE', missing
          values in the data are put last; if `FALSE', they are put
          first; if `NA', they are removed.


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
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