The LP Procedure

For the dense input format, the RHS statement identifies variables in the problem data set that contain the right-hand-side constants of the linear program. Only numeric variables can be specified. If more than one variable is included in the RHS statement, the LP procedure assumes that problems for several linear programs are defined in the problem data set. A new linear program is defined for each variable in the RHS list. If the RHS statement is omitted, the procedure assumes that a variable named _RHS_ contains the right-hand-side constants.

For the sparse input format, the RHS statement gives the names of one or more columns in the problem data set that are to be considered as right-hand-side constants. If the RHS statement is omitted, then the LP procedure assumes that the column named _RHS_ or columns with the 'RHS' keyword in the problem data set contain the right-hand-side constants. See the section Sparse Data Input Format for further discussion.

As default, the LP procedure assumes that the RHS constant is a zero vector for the dense and sparse input formats.