Problem modification routines change a problem object after it has been
created. The modifications that you can make are these:
-
adding rows and columns to the constraint matrix,
-
deleting rows and columns from the constraint matrix,
-
changing the sense of the objective function,
-
changing the value of coefficients in the constraint matrix,
-
changing an objective or righthand side coefficient,
-
changing the bounds on a variable,
-
changing the sense of a constraint,
-
changing names of rows or columns.