[Rd] inconsistent behavior for logical vectors when using apply (" TRUE")
Adrian Dragulescu
adrian_d at eskimo.com
Wed Nov 4 20:44:34 CET 2009
Hello,
> X <- data.frame(letters=letters[1:3], flag=c(TRUE, FALSE, TRUE))
> X
letters flag
1 a TRUE
2 b FALSE
3 c TRUE
> apply(X, 1, as.list)
[[1]]
[[1]]$letters
[1] "a"
[[1]]$flag
[1] " TRUE"
[[2]]
[[2]]$letters
[1] "b"
[[2]]$flag
[1] "FALSE"
[[3]]
[[3]]$letters
[1] "c"
[[3]]$flag
[1] " TRUE"
Notice how TRUE becomes " TRUE" and FALSE becomes "FALSE". Not sure why
TRUE gets an extra whitespace in front.
Checked with R-2.10.0, but can reproduce the behavior as far back as
R-2.8.1.
Adrian Dragulescu
> sessionInfo()
R version 2.10.0 (2009-10-26)
i386-pc-mingw32
locale:
[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United
States.1252
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] tools_2.10.0
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