Re: Solver, MILP and Boolean constraints

It might be a bug. Can you join your file?

Le lundi 18 octobre 2004 à 15:52 +0200, Massi A Milani a écrit :
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.


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.

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.

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