The LP Procedure
- Overview
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Getting Started
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Syntax
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DetailsMissing ValuesDense Data Input FormatSparse Data Input FormatConverting Any PROC LP Format to an MPS-Format SAS Data SetConverting Standard MPS Format to Sparse FormatThe Reduced Costs, Dual Activities, and Current TableauMacro Variable _ORLP_PricingScalingPreprocessingInteger ProgrammingSensitivity AnalysisRange AnalysisParametric ProgrammingInteractive FacilitiesMemory ManagementOutput Data SetsInput Data SetsDisplayed OutputODS Table and Variable NamesMemory Limit
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ExamplesAn Oil Blending ProblemA Sparse View of the Oil Blending ProblemSensitivity Analysis: Changes in Objective CoefficientsAdditional Sensitivity AnalysisPrice Parametric Programming for the Oil Blending ProblemSpecial Ordered Sets and the Oil Blending ProblemGoal-Programming a Product Mix ProblemA Simple Integer ProgramAn Infeasible ProblemRestarting an Integer ProgramAlternative Search of the Branch-and-Bound TreeAn Assignment ProblemA Scheduling ProblemA Multicommodity Transshipment Problem with Fixed ChargesConverting to an MPS-Format SAS Data SetMigration to OPTMODEL: AssignmentMigration to OPTMODEL: Multicommodity Transshipment
- References
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.