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Re: [Help-glpk] Indexing a subset from 1..n

From: Michael Hennebry
Subject: Re: [Help-glpk] Indexing a subset from 1..n
Date: Tue, 27 Nov 2012 15:31:59 -0600 (CST)
User-agent: Alpine 1.00 (DEB 882 2007-12-20)

On Wed, 28 Nov 2012, joel mortyn wrote:

I have a set of Periods from which I create the subset OpenPeriods when the 
facility is open.
param nPeriods;set Periods, default{1.. nPeriods};param FacilityOpen{p in 
Periods}, binary;set OpenPeriods:= setof{p in Periods: FacilityOpen[p] = 1}  
The facility is not open during all periods and I have a constraint that 
considers the configuration of the facility the previous time it was open. So I 
am trying to index the set of OpenPeriods from 1...card(OpenPeriods) rather 
than with p but so far without any luck.

Define an array that tells you the n-th open period.

Michael   address@hidden
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword."  --  Lily

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