Last chance! 50% off unlimited learning
Sale ends in
Test if running under R.
is.R()is.R returns TRUE if we are using R and FALSE
otherwise.
The function has been written such as to correctly run in all versions
of R, S and S-PLUS.
In order for code to be runnable in both R and S dialects previous to
S-PLUS 8.0, your code must either define is.R or use it as
if (exists("is.R") && is.function(is.R) && is.R()) {
## R-specific code
} else {
## S-version of code
}
# NOT RUN {
x <- stats::runif(20); small <- x < 0.4
## In the early years of R, 'which()' only existed in R:
if(is.R()) which(small) else seq(along = small)[small]
# }
Run the code above in your browser using DataLab