From tlumley at u.washington.edu  Mon Feb 23 08:49:23 2009
From: tlumley at u.washington.edu (Thomas Lumley)
Date: Sun, 22 Feb 2009 23:49:23 -0800 (PST)
Subject: [Rd] [SoC09-Info] An IPopt interface for R
In-Reply-To: <40e66e0b0902221522i37576296jdd14fb17d00ee7e9@mail.gmail.com>
Message-ID: <Pine.LNX.4.43.0902222349230.25511@hymn13.u.washington.edu>

On Sun, 22 Feb 2009, Douglas Bates wrote:

> On Sun, Feb 22, 2009 at 3:05 PM, Douglas Bates <bates at stat.wisc.edu> wrote:
>> There have been several messages on R-devel mentioning the interior
>> point optimization software Ipopt, https://projects.coin-op/Ipopt/.
>> This C++ library is released under a license called the Common Public
>> License.
>>
>> I have two questions that readers of R-devel may be able to answer.
>>
>> 1) Would creating an Ipopt interface for R be duplicating existing
>> efforts?  That is, has someone already done so or is already working
>> on this project.
>>
>> 2) Could a package incorporating Ipopt be released under some version
>> of the GPL or LGPL?
>>

Also, according to the FSF, the CPL used in Ipopt is technically incompatible with the GPL because of its choice of law clause.

       -thomas

Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle



[Rd] [SoC09-Info] An IPopt interface for R
Thomas Lumley