Hi R people:
On page 235 of the Blue Book (Becker, Chambers, and Wilks), there is a
"compose2" function.
compose2 <- function(f,g) {
gg <- substitute(g1(x))
print(gg)
gg[[1]] <- g
ff <- substitute(f1(y))
print(ff)
ff[[1]] <- f
ff[[2]] <- gg
print(ff)
fun <- function(x){ NULL }
fun[[2]] <- ff
fun
}
However, when I run this function using sum and log (as in the example), I get
the following error:
Error in fun[[2]] <- ff : object of type 'closure' is not subsettable
>
Has anyone else run into this, please?
Or is this a merely an issue with a dated concept, please?
Thanks in advance,
Sincerely,
Erin Hodgess
mailto: [EMAIL PROTECTED]
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