style question: returning multiple arguments - structure orlist
Hi, you also have the option of "throwing out" the third result by setting it to NULL (taking your LIST option)?
f <- function() {
...
list(x=x,y=y,z=z)
}
res <- f()
names(jj)
[1] "x" "y" "z"
res$z <- NULL names(res)
[1] "x" "y" and then work with res (res$x and res$y)? Regards, -tom -- Email: vogels at cmu.edu Phone: 412.855.2096
On Fri, 27 Jul 2001, Kevin Murphy wrote:
I have a question about what is considered good style in R.
I have a function which returns several arguments, say [x,y,z]=f(),
where sometimes I only care about the first few
(so in Matlab, I can write e.g., [x,y] = f()).
In R, there seem to be 2 ways to write this, both unsatisfying (to me):
LIST
f <- function() {
...
list(x=x,y=y,z=z)
}
res <- f()
x <- res$x; y <- res$y; z <- res$z
STRUCTURE
f <- function() {
...
structure(x,y=y,z=z)
}
x <- f()
y <- attr(x,"y"); z <- attr(x, "z")
Which is considered better style, or does it just depend on the
problem?
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._