<br>Problem solved. I found the reason. It was due to my mistake on creating the subsets Incoming<V,A> and Outgoing<V,A>.<br><br><div class="gmail_quote">On Wed, Sep 22, 2010 at 7:00 PM, <span dir="ltr"><<a href="mailto:flopcpp-request@list.coin-or.org">flopcpp-request@list.coin-or.org</a>></span> wrote:<br>
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Today's Topics:<br>
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1. using subsets in constraints and in summations (Arman Boyac?)<br>
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----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Wed, 22 Sep 2010 18:29:57 +0300<br>
From: Arman Boyac? <<a href="mailto:armanboyaci@gmail.com">armanboyaci@gmail.com</a>><br>
Subject: [FlopCpp] using subsets in constraints and in summations<br>
To: <a href="mailto:flopcpp@list.coin-or.org">flopcpp@list.coin-or.org</a><br>
Message-ID:<br>
<<a href="mailto:AANLkTikGGyxBZmWL4SObjZDbTg9daiwT__3gbdMKtzzc@mail.gmail.com">AANLkTikGGyxBZmWL4SObjZDbTg9daiwT__3gbdMKtzzc@mail.gmail.com</a>><br>
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<br>
Hi,<br>
<br>
In the following code we try to take a subset of constraints using *MP_subset<br>
( in the example: N)<br>
*I think the hard part is that in the same time we take a subset of data (in<br>
the example: Incoming and Outgoing)*<br>
*<br>
<br>
> MP_set V(100);<br>
> MP_set A(50);<br>
><br>
> MP_data D(V);<br>
><br>
> MP_subset<2> Incoming(V,A);<br>
> MP_subset<2> Outgoing(V,A);<br>
><br>
> MP_subset<1> N(V);<br>
><br>
> MP_variable Flow(A);<br>
><br>
> MP_index v;<br>
><br>
><br>
> Conservation(N(v))=-1*sum(Incoming(N(v),A),Flow(A))+sum(Outgoing(N(v),A),Flow(A))==D(v);<br>
><br>
//<br>
> Conservation(N(V))=-1*sum(Incoming(V,A),Flow(A))+sum(Outgoing(V,A),Flow(A))==D(V);<br>
><br>
//Conservation(N(v))=-1*sum(Incoming(v,A),Flow(A))+sum(Outgoing(v,A),Flow(A))==D(v);<br>
><br>
<br>
<br>
We tried several things:<br>
(1) It does not work at all.<br>
(2) The domain of the summation is not correct (not restricted)<br>
(3) Same thing as in (2)<br>
<br>
I hope that the problem is clear :)<br>
<br>
Thanks in advance.<br>
<br>
-Arman<br>
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End of FlopCpp Digest, Vol 44, Issue 5<br>
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</blockquote></div><br>