Hi,
when running the following on different instances of R (Linux and
Windows), I get different results. The one for Linux seems to be the
intended / documented one. When using numeric indices rather than
characters, Windows seemed to behave as expected.
-----------On Windows--------------
x = matrix(FALSE, nrow=3, ncol=3)
colnames(x) = LETTERS[1:3]
rownames(x) = letters[1:3]
x
# A B C
# a FALSE FALSE FALSE
# b FALSE FALSE FALSE
# c FALSE FALSE FALSE
x [ cbind("b", "B") ] = TRUE
x
b B
# FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE TRUE TRUE
sessionInfo()
R version 2.10.0 (2009-10-26)
i386-pc-mingw32
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
-----------On Linux--------------
x = matrix(FALSE, nrow=3, ncol=3)
colnames(x) = LETTERS[1:3]
rownames(x) = letters[1:3]
x
# A B C
# a FALSE FALSE FALSE
# b FALSE FALSE FALSE
# c FALSE FALSE FALSE
x [ cbind("b", "B") ] = TRUE
x
# A B C
# a FALSE FALSE FALSE
# b FALSE TRUE FALSE
# c FALSE FALSE FALSE
> sessionInfo()
R version 2.11.0 Under development (unstable) (2010-02-12 r51125)
x86_64-unknown-linux-gnu
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=C LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices datasets utils methods base
other attached packages:
[1] fortunes_1.3-7
--
Best wishes
Wolfgang
--
Wolfgang Huber
EMBL
http://www.embl.de/research/units/genome_biology/huber/contact
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