[OS] OSnl2osil

[Kipp Martin]

Hi Susana:

By the way, any email I try to send to you directly is getting bounced back.

I just tried to run your AMPL model and the result I get is below. As 
you can see the OSResult file contains error message below:


<message>OS cannot handle AMPL user defined variables, please reformulate
</message>

so it appears you are using "user defined variables" which at this time 
we don't support. For example you have

var q{i in 0..n} = 1.0 + f[i]*cos(L[i]) + g[i]*sin(L[i]);

so variable q depends on variables f an g and is defined in terms of them.

See, for example,


http://www.gerad.ca/~orban/drampl/def-vars.html


I realize that this is a convenient feature that users want. We do hope 
to put this feature in.

My apologies for now.

Regards,

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type = "text/xsl" 
href = "../stylesheets/OSrL.xslt"?><osrl 
xmlns="os.optimizationservices.org" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="os.optimizationservices.org 
http://www.optimizationservices.org/schemas/OSrL.xsd" >
<resultHeader>
<generalStatus type="error"/>
<message>OS cannot handle AMPL user defined variables, please 
reformulate</message>
</resultHeader>
<resultData>
</resultData>
</osrl>

-- 
Kipp Martin
Professor of Operations Research
and Computing Technology
Graduate School of Business
University of Chicago
5807 South Woodlawn Avenue
Chicago, IL 60637
773-702-7456
kipp.martin at chicagogsb.edu
http://gsbkip.chicagogsb.edu
http://www.coin-or.org