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Re: [Help-glpk] MathProg problem

From: Robert Fourer
Subject: Re: [Help-glpk] MathProg problem
Date: Mon, 21 Feb 2005 11:22:37 -0600
User-agent: Microsoft-Entourage/

You should be able to declare an indexed collection of sets, for example:

   set BaseSET;
   set SetColl {BaseSET};

   param DataVals {s in BaseSET, t in SetColl[s]};

Each of the sets in the collection may be given different numbers of
elements.  For example the data file could contain:

   set BaseSET := a b c ;

   set SetColl[a] := ABD KDL ;
   set SetColl[b] := G H LKM H KI ;
   set SetColl[c] := ZZ YY XX ;

SetColl can be used similarly to index parameters, variables, constraints,
sums, and the like.

Bob Fourer

In reply to the message from >>> Niyati Parikh <address@hidden>
received 2/18/05 11:13 PM:

> Greetings,
>           I am using MathProg to solve a Linear Programming Problem. I need to
> create a parameter that will be an array of Sets. How can I declare such a
> parameter ?
> At runtime I would give sets for this array. Note that these sets would be 1
> dimensional and would contain different number of elements.
> I appreciate your help.
> Thanks,
> Niyati Parikh
> Graduate Student
> Arizona State University
> Yahoo! India Matrimony: Find your life partneronline.
> _______________________________________________
> Help-glpk mailing list
> address@hidden

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