[R] NA rownames in dataframes

[ripley@stats.ox.ac.uk]

It's a bug in data.frame.  You should not be allowed NA rownames.
Solution: don't specify them.

I'll add a test for 1.6.0.

On Wed, 28 Aug 2002, Yi, Derek wrote:

> Hey everyone!
>
> I am seeing strange behavior with NA in the rownames of dataframes:
>
> > a <- data.frame(1:3, row.names = c("r1", NA, "r3"))
> > cbind(a)
>        X1.3
> r1        1
> <NA>      2
> r3        3
>
> Everything works.  The peculiar thing is that when the NA is in the first
> row, things no longer work as I would have expected:
>
> > b <- data.frame(1:3, row.names = c(NA, "r2", "r3"))
> > cbind(b)
> Error in if (missing(row.names) && (nrows[i] > 0) && (rowsi[[1]] != ""))
> row.names <- data.row.names(row.names,  :
> 	missing value where logical needed
> > 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?
>
> Thanks!
>
> Derek
>
> > R.version
>          _
> platform sparc-sun-solaris2.6
> arch     sparc
> os       solaris2.6
> system   sparc, solaris2.6
> status
> major    1
> minor    5.1
> year     2002
> month    06
> day      17
> language R
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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