If your function is f(x), then you could apply optim to g(x) := f(x)^2.
You can also consider the DEoptim package to perform robust optimization
based on a genetic algorithm.
Hope it helps,
David
-----Original Message-----
From: r-sig-finance-bounces at stat.math.ethz.ch
[mailto:r-sig-finance-bounces at stat.math.ethz.ch] On Behalf Of Valentin
Popov
Sent: mercredi, 15. novembre 2006 12:11
To: r-sig-finance at stat.math.ethz.ch
Subject: [R-SIG-Finance] Zeros of a hairy function
Hi all,
In order to get an estimator for the correlation between two asstes I
need the zeros of a quite "hairy" nonlinear function. Could you give me
a tip which function in R could supply a solution? I thought of 'optim'
but it will only minimize the function but not get its zeros.
Thanks a lot!
Valentin
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