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Message-ID: <20051024021834.M50089@cc.kmu.edu.tw>
Date: 2005-10-24T02:23:34Z
From: Chun-Ying Lee
Subject: confine the value

Dear R users:

  I wonder if it is possible to confine the value which 
"optim" optimized to be all positive. I use optim with 
method "Nelder-Mead". Please give me some comments.
Thanks in advance!!