[R] NA rownames in dataframes

[Peter Dalgaard BSA]

"Yi, Derek" <Derek.Yi at FMR.COM> writes:

> > data.frame(b)
> Error in if (missing(row.names) && (nrows[i] > 0) && (rowsi[[1]] != ""))
> row.names <- data.row.names(row.names,  : 
> 	missing value where logical needed
> 
> > traceback()
> 3: data.frame(..., check.names = FALSE)
> 2: cbind(...)
> 1: cbind(b)
> 
> This seems to be a problem associated only with dataframes, as a similar
> example using matrices works perfectly fine.  Has anyone experienced this
> behavior before?

Not to my knowledge, on this list, anyway. However, it looks like a
fairly clear bug. I think you want 

... && !(rowsi[[1]] %in% "")

in the relevant line about two-thirds through data.frame().

Character NA's (as opposed to the string "NA") are a relatively new
invention, and oversights like this are bound to happen.

(NA rownames are generally a bad idea, though...)

-- 
   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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