> >If a row is non-active, changing its bounds does not affect the basic > solution. > This is only true for small change but not true for large change.
No, this is true for any change, assuming that a new lower bound remains not greater than and a new upper bound remains not less than the current optimal value of a variable. If a constraint is non-active, this is the same as that constraint would be omitted at all. Please note that the post-optimal analysis is an analysis of the neighborhood of the optimal point where the basis is not changed. Most probably you need a parametric analysis, which is not implemented in glpk. > For example: if you change the rhs of the r row below 200. You will > get new solution. You can also check this with Excel. > Is there any way to get correct range of non-active row? _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
