attributes {base} | R Documentation |
These functions access an object's attribute list. The first form above returns the an object's attribute list. The assignment forms make the list on the right-hand side of the assignment the object's attribute list (if appropriate).
attributes(obj) attributes(obj) <- list mostattributes(obj) <- list
The mostattributes
assignment takes special care for the
dim
, names
and dimnames
attributes, and assigns them only when that is valid whereas as
attributes
assignment would give an error in that case.
attr
.
x <- cbind(a=1:3, pi=pi) # simple matrix w/ dimnames str(attributes(x)) ## strip an objects attributes: attributes(x) <- NULL x # now just a vector of length 6 mostattributes(x) <- list(mycomment = "really special", dim = 3:2, dimnames = list(LETTERS[1:3], letters[1:5]), names = paste(1:6)) x # dim(), but not {dim}names