[R] table lookup n R
ggrothendieck at myway.com
Tue Jul 13 15:05:20 CEST 2004
Try subscripting, e.g.
# L holds numbers; its names hold lookup keys
L <- 1:26; names(L) <- letters
L[c("d","f")] # look up numbers of d and f
or merge, e.g.
merge(c("d","f"), L, by.x = 1, by.y = 0)
Anne <anne.piotet <at> urbanet.ch> writes:
: Hello R helpers!
: I looked but did not find a table-lookup R-utility. I could use a loop to
do the job (old FORTRAN/C habits die
: hard) but if I have a big table in which I have to search for the values
corresponding to a vector, I end up
: logically with a double loop.
: Is there already such a utility? Otherwise, is there a way without loops?
: Thanks as always
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