| attr {base} | R Documentation |
Object Attributes
Description
Get or set specific attributes of an object.
Usage
attr(x, which)
attr(x, which) <- value
Arguments
x |
an object whose attributes are to be accessed. |
which |
a character string specifying which attribute is to be accessed. |
value |
an object, the new value of the attribute. |
Value
This function provides access to a single object attribute. The simple form above returns the value of the named attribute. The assignment form causes the named attribute to take the value on the right of the assignment symbol.
The first form first looks for an exact match to code amongst the
attributed of x, then a partial match. If no exact match is
found and more than one partial match is found, the result is NULL.
References
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth \& Brooks/Cole.
See Also
attributes
Examples
# create a 2 by 5 matrix
x <- 1:10
attr(x,"dim") <- c(2, 5)