On 03/02/2016 12:41 PM, Amoy Yang via R-help wrote:
There is a %LET statement in SAS: %let MVAR=population; Thus, MVAR can be
used through entire program.
In R, I tried MAVR<-c("population"). The problem is that MAVR comes with double quote
"...." that I don't need. But MVAR<-c(population) did NOT work out. Any way that double
quote can be removed as done in SAS when creating macro_var?
Thanks in advance for helps!
R doesn't have a macro language, and you usually don't need one.
If you are only reading the value of population, then
MAVR <- population
is fine. This is sometimes the same as c(population), but in general
it's different: c() will remove some attributes, such as
the dimensions on arrays.
If you need to modify it in your program, it's likely more complicated.
The normal way to go would be to put your code in a function, and have
it return the modified version. For example,
population <- doModifications(population)
where doModifications is a function with a definition like
doModifications <- function(MAVR) {
# do all your calculations on MAVR
# then return it at the end using
MAVR
}
Duncan Murdoch
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
