From: Adaikalavan Ramasamy (ramasamy@stats.ox.ac.uk)
Date: Wed 07 Aug 2002 - 02:25:53 EST
Message-id: <002f01c23d65$ef4c9540$a81401a3@stats.ox.ac.uk>
Hi ! I am trying to minimise a function over 2 variables simultaneously. Is
this possible ? I have only recently been introduced to optim() and
optimise() function. Here is simple example of what I tried to do :
silly.fn <- function(x,y) { (x-5)^2 + (y-2)^2 }
optim( par=c(3,1) , silly.fn )
Analytically, the answer should be (5,2) but the computer is asking for the
y value. Is there a function to do the minimisation simultaneously in S-PLUS
or R ?
Many thanks, Adai.
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