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Re: [Help-glpk] Some suggestions to GLPK/L
From: |
Luis E. Castro |
Subject: |
Re: [Help-glpk] Some suggestions to GLPK/L |
Date: |
Wed, 24 Jul 2002 15:52:52 -0600 |
Hello.
> >1. numerical set, like mentioned in a previous email.
> >It would be convienient if we can simply declare
> > set S = (1..10000);
> >How inconvienient if I have to explictly list 10000
> >items in the set.
>
> I agree :+) However all items (i.e. elements of a set) should have
> unique names, so integers can't be used (otherwise from the context
> 'a[#123]' it is unclear which set the item '123' belongs to). The main
> issue is the syntax. The context 'set S = (ABC1..ABC1000)' is more or
> less clear. But what about 'set S = (ABC1D..ABC1000D)'? May be better to
> write something like 'set S = (address@hidden@D, i=1..1000)' ?
But you already have the type of i.
When you say:
parameter winter[months];
in the expression winter[i], i is member of the set months.
Luis E. Castro