> I do not belong to the OR community. Anyway I need Linear Programming to > solve a problem. I start using glpk with diffilculty. At least I would > have expected that just adding a display statement in one of the simple > example file provided with glpk would entail no problem. > > I just ran glpsol --model bpp.mod with some display statement added (see > below (111)) and obtained (222). I don't understand this behaviour since > the glpk lang.ps documentation explicitly shows that such statements as > display{i in I, j in J}: i,j,x[i,j]; are allowed.
If you wish to see results of optimization, you should specify the solve statement preceding the display statement, that is: ... minimize obj: sum{j in J} used[j]; /* objective is to minimize the number of bins used */ solve; /* C.S. 15/12/05 */ display '*************************'; /* display{j in J}: j, used[j]; */ display '*************************'; /* display{i in I}: i; */ /* display{j in J}: j; */ display{ii in I, jj in J}: ii,jj,x[ii,jj]; ... _______________________________________________ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk