[R] Fwd: question on constrOptim

[Jeff Newmiller]

You are unlikely to get help on this without a reproducible example. One obvious possibility is that those values are already optimal. Another is that you are not invoking the optimization properly. 
-- 
Sent from my phone. Please excuse my brevity.

On March 24, 2016 5:13:35 AM PDT, Anusha Kothapalli <akothapa at umass.edu> wrote:
>---------- Forwarded message ----------
>From: *Anusha Kothapalli* <akothapa at umass.edu>
>Date: Wednesday, March 23, 2016
>Subject: question on constrOptim
>To: R-core at r-project.org
>
>
>To Whom It May Concern,
>
>We are using constrOptim to maximize a log likelihood function. The
>constrOptim call returns values, however, they are *exactly identical*
>to
>the initial values we input. Our ci, ui, gradient, etc. match the
>requirements for use of this function. So we are out of ideas. Would
>you
>happen to know how to make constrOptim run multiple iterations and/or
>return values that aren't equal to our initial values?
>Any input you have would be greatly appreciated!
>
>Thanks :)
>
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>
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