| attributes {base} | R Documentation |
Object Attribute Lists
Description
These functions access an object's attribute list. The first form below returns the 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).
Usage
attributes(obj)
attributes(obj) <- value
mostattributes(obj) <- value
Arguments
obj |
an object |
value |
an appropriate attribute list, or |
Details
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.
References
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth \& Brooks/Cole.
See Also
attr.
Examples
x <- cbind(a=1:3, pi=pi) # simple matrix w/ dimnames
attributes(x)
## strip an object's 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