Hi,
Consider I have defined set i as /5,7,8,3,2,9/ in Gams and I want to define sub(i) such that contains the first element of i and define sub2(i) such that includes the last element of i. How shoud I do that?
It is notable that the set i is imported to Gams and I don't know its element in advance.
Refer to Special element of a set
Refer to Special element of a set
Last edited by Bahar_Mdi 2 years ago, edited 1 time in total.
Re: Refer to Special element of a set
First make sure you get the order of i you expect by "display i"; Then you can get the first and last element like this
-Michael
Code: Select all
set iFirst(i), iLast(i);
iFirst(i) = i.first;
iLast(i) = i.last;
display i,iFirst,iLast;
Re: Refer to Special element of a set
Thanks for your help.