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2005 Feb 25
3
restoring vector v from v[-i]
Hi
I have a little function that takes a vector v and an integer i. I
want to manipulate
v[-i] (to give v.new, say) and
then put (unmanipulated) v[i] back into the appropriate place. For
example,
f <- function(v,i){
v.new <- v[-i]+10
return(c(v.new[1:(i-1)],v[i],v.new[i:length(v.new)]))
}
(my example is adding 10 to v[-i], but the real version is the solution
of a complicated function involving
a call to Solve(A,b))
Functio...