replace {dat} | R Documentation |
This function replaces elements in a vector. It is a link to replace as a generic function.
replace(x, ind, values, ...) ## S4 method for signature 'ANY,'function'' replace(x, ind, values, ...) ## S4 method for signature 'ANY,formula' replace(x, ind, values, ...) ## S4 method for signature 'ANY,character' replace(x, ind, values, ...)
x |
(atomic | list) a vector. |
ind |
used as index for elements to be replaced. See details. |
values |
the values used for replacement. |
... |
arguments passed to |
The idea is to provide a more flexible interface for the
specification of the index. It can be a character, numeric, integer or
logical which is then simply used in base::replace
. It can be a
regular expression in which case x
should be named – a character of
length 1 and a leading "^" is interpreted as regex. When ind
is a
function (or formula) and x
is a list then it should be a predicate
function – see the examples. When x is an atomic the function is applied
on x and the result is used for subsetting.
replace(c(1, 2, NA), is.na, 0) replace(c(1, 2, NA), rep(TRUE, 3), 0) replace(c(1, 2, NA), 3, 0) replace(list(x = 1, y = 2), "x", 0) replace(list(x = 1, y = 2), "^x$", 0) replace(list(x = 1, y = "a"), is.character, NULL)