[R] character vectors in data.frames
lgygax at access.unizh.ch
Fri Jan 8 13:58:03 CET 1999
well, today I just seem to run into these problems ... (I am still working
on R 0.63.1 on a SuSE 5.2). I would like to have a data.frame that also
contains character (and NOT factor) vectors. Two things that I tried (the
second worked in R 0.62.2):
> test.df <- data.frame (X= character (4))
> test.df$X  <- "a"
Warning: invalid factor level, NAs generated
> X <- c ("a", "b", "c")
> is.character (X)
> test.df <- data.frame (X)
> is.character (test.df$X)
Any suggestions how to achieve this? Many thanks!
Lorenz Gygax LGygax at amath.unizh.ch; room: 36-L-40
Department of Applied Mathematics
University of Zuerich-Irchel
Winterthurerstr. 190; CH-8057 Zurich
voice: 41-1-635-58-52 fax: 41-1-635-57-05
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