Negative Integer Variable

GAMS
1

Hello everyone,

Im not a big GAMS expert, so I’m having some difficulties trying to create a variable, i hope this isn’t too trivial. I know the bounds for the default are -inf to +inf and for the integer are 0 to +inf. However, for my model I require negative integer numbers as well. So basically the bounds of the default variable but only with integers. Does anyone know how to achieve this?

Many thanks in advance! :slight_smile:

TF

2

It is as simple as setting the lower bound of an integer variable to -inf:

Integer variable x(i); x.lo(i) = -inf;

-Michael

3

That did the trick, thank you Michael!