rvmatch returns a (random) vector of the positions of (first) matches
of its first argument in its second.
rvmatch(x, table, nomatch = NA_integer_, incomparables = NULL)random vector, regular atomic vector, or NULL: the values to
be matched.
random vector, regular atomic vector, or NULL: the
values to be matched against.
the value to be returned in the case when no match is found.
Note that the value is coerced to integer.
a vector of values that cannot be matched. Any value
in x matching a value in this vector is assigned the nomatch value. For
historical reasons, FALSE is equivalent to NULL
A random vector (an rv object) of the same length as x.
rvmatch returns an integer-valued vector.
%*in*% returns a logical-valued vector.
Both functions are compatible with regular atomic vectors.
%*in*% is a binary operator (analogous in its operation to
%in%) which returns a logical (random) vector indicating if there is
a match or not for its left operand.
...
Kerman, J. and Gelman, A. (2007). Manipulating and Summarizing Posterior Simulations Using Random Variable Objects. Statistics and Computing 17:3, 235-244.
See also vignette("rv").
x <- rvempirical(5, 1:10)
z <- rvmatch(x, table=1:3, nomatch=0L)