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2001 Feb 14
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...p*, 3, 4, value = "IS") : > unused argument(s) (value ...) Question: ======= Is there a reference to the obseravation, that in R, missing parameters of a function can be "declared" using NULL, as in xxx <- function (x, miss=NULL) { otherfunction <- function (x, missOther=NULL) { .. } otherfunction(x, miss) } The solution of R is preferable to S+3.4's, since it allows functions within functions to have missing parameters without the (ugly) construct: xxx <- function (x, miss) { otherfunction <- function (x, miss) { .. } if (missing(miss)) otherfunc...