From ripley at stats.ox.ac.uk  Wed Aug 15 20:32:59 2007
From: ripley at stats.ox.ac.uk (Prof Brian Ripley)
Date: Wed, 15 Aug 2007 19:32:59 +0100 (BST)
Subject: [Rd] [Fwd: behavior of L-BFGS-B with trivial function triggers
 bug in stats4::mle]
In-Reply-To: <46C1FF19.7000003@biostat.ku.dk>
References: <46C0D1FF.3020005@zoo.ufl.edu> <20070814182635.GB29808@cs.cas.cz>
	<loom.20070814T203613-433@post.gmane.org>
	<46C1FF19.7000003@biostat.ku.dk>
Message-ID: <Pine.LNX.4.64.0708151932240.31744@gannet.stats.ox.ac.uk>

On Tue, 14 Aug 2007, Peter Dalgaard wrote:

> Ben Bolker wrote:
>> Petr Savicky <savicky <at> cs.cas.cz> writes:
>>
>>
>>
>>> Could you also include a script, which reproduces the problem? Just
>>> to see under which conditions the problem occurs and how it
>>> looks like exactly.
>>>
>>> Petr Savicky.
>>>
>>>
>>
>>   The original post has such a script, just under the dashed line
>> and above the diff/patch.  Sorry if I wasn't clear about that.
>>
>>
> Patch inserted in r-devel now.

And all optim() methods now work on zero-length 'par'.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



[Rd] [Fwd: behavior of L-BFGS-B with trivial function triggers bug in stats4::mle]
Prof Brian Ripley