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

[Michael Hennebry]

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   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