>> I check my code and I resolve my problem. But, an other problem appear. >> >> When I fix a variable at one, and after, I define the type as binary, then >> the lower bound is 0 instead of 1. >> >> I resolve this problem in declaring variables as integer. But, why >> glp_set_col_kind redefine the lower bound
Because binarity assumes that. The glpk reference manual, section "Mixed integer programming routines", subsection "Set (change) column kind" says: "Setting a column kind to GLP_BV has the same effect as if it were set to GLP_IV, its lower bound were set 0, and its upper bound were set to 1." _______________________________________________ Bug-glpk mailing list Bug-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/bug-glpk
