I tried to make a set of constraints.
It is something like:
set time /t1*t4/;
set t(time) /t1*t3/;
Variables
A(time)
Equations
Eq1(t).. A(t+1)-A(t) =E= 1;
it is very annoying that even though A(t4) exist, the constrains of Eq(t3) is always become:
0-A(t3) =E= 1;
How can I deal with such situation?
Please tell me the solutions of following two cases:
(1) To make Eq(t3) as "A(t4)-A(t3) =E= 1";
(2) To exclude Eq(t3);
Thank you very much for your kindly help.
Domain filtering
Re: Domain filtering
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Enjoy modeling even more: Read my blog on modeling at The lazy economist
Enjoy modeling even more: Read my blog on modeling at The lazy economist
Re: Domain filtering
Hi Renger,
Thanks very much for your help.
According to that post
I can modify the equation as follow:
Eq1(t) $ (ord(t) ne card(t)) .. A(t+1)-A(t) =E= 1;
It works as that it excluded Eq1(t3);
However, what if I what to introduce A(t4) into Eq1(t3) instead of excluding it without expanding the domain, as I mention in Case (1)?
Be noted that A(t4) is also variables but not in the domain of t.
Thanks again for your help
Thanks very much for your help.
According to that post
I can modify the equation as follow:
Eq1(t) $ (ord(t) ne card(t)) .. A(t+1)-A(t) =E= 1;
It works as that it excluded Eq1(t3);
However, what if I what to introduce A(t4) into Eq1(t3) instead of excluding it without expanding the domain, as I mention in Case (1)?
Be noted that A(t4) is also variables but not in the domain of t.
Thanks again for your help
Renger wrote: ↑6 years ago Hi Yamaz
See my reply in this post from last week: viewtopic.php?f=2&t=10156#p23277
Cheers
Renger
- Gideon Kruseman
- User
- Posts: 24
- Joined: 6 years ago
Re: Domain filtering
set time /t1*t4/;
set t(time) /t1*t3/;
Variables
A(time)
Equations
Eq1(time)$t(time).. A(time+1)-A(time) =E= 1;
set t(time) /t1*t3/;
Variables
A(time)
Equations
Eq1(time)$t(time).. A(time+1)-A(time) =E= 1;
Gideon Kruseman
ex-ante and foresight lead @CIMMYT, big data focal point @CIMMYT, coordinator CoP socio-economic data @CGIAR_BigData
ex-ante and foresight lead @CIMMYT, big data focal point @CIMMYT, coordinator CoP socio-economic data @CGIAR_BigData