Path: news.mathworks.com!not-for-mail
From: <HIDDEN>
Newsgroups: comp.soft-sys.matlab
Subject: nonlinear constraint help
Date: Thu, 17 Sep 2009 23:13:03 +0000 (UTC)
Organization: The MathWorks, Inc.
Lines: 13
Message-ID: <h8ufpv$2iq$1@fred.mathworks.com>
Reply-To: <HIDDEN>
NNTP-Posting-Host: webapp-03-blr.mathworks.com
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1253229183 2650 172.30.248.38 (17 Sep 2009 23:13:03 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Thu, 17 Sep 2009 23:13:03 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 1317328
Xref: news.mathworks.com comp.soft-sys.matlab:571218


Hello to all,

I have two maybe very dumb questions but I cannot get my head around these: I have a problem subject to 18 linear constraints and 1 nonlinear constraint. In this last one appear in part variables present also in the linear ones and other variables.
 Questions: 
1. from the nonlinear constraint to recall the variables present in the linear constraints, I'm calling them with x(position), given the example here http://www.mathworks.com/access/helpdesk/help/toolbox/optim/index.html?/access/helpdesk/help/toolbox/optim/ug/brhkghv-7.html&http://www.mathworks.com/matlabcentral/newsreader/view_thread/256555 is this correct? the name of the solution in my function where I call fmincon is x.

2. the second question is if I can add more variables to be solved for in the nonlinear constraint, but these would be only in this constraint (they are multiplied by the other variables present also in the linear constraints so they should be identified, isn't it?). I have seen the documentation on how to pass parameters in the nonlinear constraints but not variables, is this possible?

Thanks a lot for your help in advance,

Best Regards,

Simone