Greetings,
I love the R system and am sincerely grateful for the great effort the
product and contributors
are delivering.
My question is as follows:
I am trying to use S4 style classes but cannot write functions that modify
an object
because paramter passing is by value.
For example I want to do this:
setGeneric("setData", function(this,fcn,k){ standardGeneric("setData") })
setClass(
"test",
representation(f="numeric", t="numeric")
)
setMethod("setData","test",
function(this,fcn,k){
t...@t <- as.numeric(seq(-k,k))/(2*k+1)
t...@f <- sapply(t,FUN=fcn)
}
)
#-----------------------------------------------------------
tst <- new("test")
fcn <- function(u){ sin(2*pi*u) }
setData(tst,fcn,100)
t...@t # it's still empty because of pass by value
How can this be handled?
Many thanks,
Michael
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