| Lookup {DescTools} | R Documentation |
Lookup searches the positions of (first) matches of the argument x in its second argument idx and returns the according values from ret.
Lookup(x, ref, val)
x |
vector: the values to be matched. Long vectors are supported. |
ref |
vector: the values to be matched. Long vectors are supported. |
val |
vector: the values to be returned. |
This function is wrapping the function match allowing to pass a vector from which the found elements should be returned. This is often used in a code lookup situation and might be simpler than using match or merge.
A vector of the same length as x
giving the elements in ret at the position in idx of the first match if there is a match. If there's no match NA will be returned.
Andri Signorell <andri@signorell.net>
x <- c("a", "h", "b")
z <- LETTERS
Lookup(x, letters, z)