How would you specify that?
> Date: Tue, 27 Nov 2012 15:31:59 -0600 > From: [email protected] > To: [email protected] > CC: [email protected] > Subject: Re: [Help-glpk] Indexing a subset from 1..n > > 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} > > (p); > > 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 [email protected] > "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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