GAMS World Forum

Manassaldi wrote: ↑1 year ago Hello, I suggest you make a manually "big M" or convex hull reformulation or try with the indicator constraint. Best!

Hi
I have aleready tested big M but it didnt work.
Thanks for your help.
Saeid

Hi, You can use the indicator constraint to achieve what you want for the variable condition in equations. And I just posted a question post here . If someone answers my post, I think you will be able to implement the indicator constraint through my small example! Cheers, Gabriel Hi Thanks for your...

hi i need to use variable Pm(m,MEG,t) in a equation condition term as illustrated bellow, however, it is not possible to use a variable in a equations condition. i wonder if there is any solution or trick for this problem. parameter numb(m) G(m,n) PDGmax(m) ; binary variable zz(m,t) ; variable Pm(m,...

Sorry, one more question. Is it possible that if I set optcr=0, the model doesn't turn to optimal? In other words, does setting optcr=0 turn the integer solutions to optimal in any cases?

hi
when i run my mip model, the model status is code 8: integer solutions; however when I set optcr to 0 the model turn into optimal. in this situation can i assume that my model is global optimal?

thank you.i fixed it!

hi
actually i did lots of attemps.

hi
I'm quite newbie to the gams. I have a problem defining a limited range for a summation below: please help me writing this equation properly.