[R] how to extract options for a function call

From: fisken <torpedofisken_at_gmail.com>
Date: Mon, 18 Apr 2011 15:56:56 +0200


Hi, I'm having some difficulties formulating this question.

But what I want,
is to extract the options associated with a parameter for a function.

e.g.
method = c("Nelder-Mead", "BFGS", "CG", "L-BFGS-B", "SANN") in the optim function.

So I would like to have a vector with
c("Nelder-Mead", "BFGS", "CG", "L-BFGS-B", "SANN")

Or for instance the 'method' in the dist function can be supplied with euclidian,maximum,manhatten, canberra,binary,minkowski.

Is there someway to extract this so I would have a vector with c("euclidian","maximum","manhatten", "canberra","binary","minkowski").

Thanks



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