Hello, All:
I have for years copied an address like "C:\Program
Files\R\R-2.15.0\library\MASS\scripts" from Windows Explorer into R,
then manually replaced "\" with "/". I have a function to automate this
added to the development version of "sos". However, it generates a
warning in "R CMD check" ("parse error: unexpected input"). I have so
far not found a way to eliminate the warning without wrapping examples
in "\dontrun" or making the examples hard to understand; neither of
these alternatives are acceptable.
The following is my current solution:
back2ForwardSlash <- function(nmax=1, what=character(), sep='\n', ...){
x2 <- scan(what=what, nmax=nmax, sep=sep, ...)
x. <- gsub('\\', '/', x2, fixed = TRUE)
}
(x <- back2ForwardSlash())
c:\Users\
all.equal(x, 'c:/Users/')
# TRUE
x2. <- back2ForwardSlash(2)
c:\u\a b\n o
d:/pqr/
all.equal(x2., c('c:/u/a b/n o', 'd:/pqr/'))
# TRUE
QUESTION: Might anyone have a better solution and / or simple, clear
examples that do not generate a warning in "R CMD check"?
NOTE: In case you want to try this development version of "sos"
including this function, it is available via "svn checkout
svn://svn.r-forge.r-project.org/svnroot/rsitesearch/" or
install.packages('sos', repos = "http://R-Forge.R-project.org";).
Thanks,
Spencer
p.s. Prof. Ripley provided a way to do this on R-help several years
ago. Unfortunately, I've been unable to find his solution.
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