Re: Solver, MILP and Boolean constraints

[Massi A Milani <mamilani gmail com>]

Thank you very much for your clarification.
I am sorry that I was not too much clear on the issue.

The reason I have sent the email to the list is exactly the following
Cells in my problem (T2:T204) are in the "By changing cells" entry.
Therefore, Gnumeric should not give me that message.

Massi


On Mon, 18 Oct 2004 15:44:02 +0200, Jean Bréfort
<jean brefort normalesup org> wrote:
> Le samedi 16 octobre 2004 à 14:16 +0000, Massi a écrit :
>
>
> > Hi guys,
> >
> > I am running a MILP problem with Gnumeric 1.2.13.
> > The Solver of Gnumeric is able to solve it in less than 1 second, 5
> > time faster than Excel. However, introducing a Boolean constraint
> > (i.e. modifiable cells can only assume a binary value, 0 or 1), I get
> > the following message
> >
> > Constraint `T2:T204 Bool ' is for a cell that is not an input cell
> >
> > Since the Handbook of Gnumeric does not actually specify how to input
> > a binary constraint, I included it as I usually do in Excel.
> > I am just wondering whether I made a mistake or Boolean constraints do
> > not work properly.
> >
> > I would really appreciated your help.
> > Massi
> >
> > PS: I have been pretty happy to notice that Gnumeric does not have the
> > 200-constraint limit as Excel does. Good job, guys!
>
> The cell for which you add a constraint must be an input cell of the
> problem. In other words, it must already be listed in the "By Changing
> Cells" entry.


-- 
Massi Milani
emails:
mamilani gmail com
mam265 cornell edu