The LP Procedure
- Overview
-
Getting Started
-
Syntax
-
Details
Missing Values Dense Data Input Format Sparse Data Input Format Converting Any PROC LP Format to an MPS-Format SAS Data Set Converting Standard MPS Format to Sparse Format The Reduced Costs, Dual Activities, and Current Tableau Macro Variable ORLP Pricing Scaling Preprocessing Integer Programming Sensitivity Analysis Range Analysis Parametric Programming Interactive Facilities Memory Management Output Data Sets Input Data Sets Displayed Output ODS Table and Variable Names Memory Limit
-
Examples
An Oil Blending Problem A Sparse View of the Oil Blending Problem Sensitivity Analysis: Changes in Objective Coefficients Additional Sensitivity Analysis Price Parametric Programming for the Oil Blending Problem Special Ordered Sets and the Oil Blending Problem Goal-Programming a Product Mix Problem A Simple Integer Program An Infeasible Problem Restarting an Integer Program Alternative Search of the Branch-and-Bound Tree An Assignment Problem A Scheduling Problem A Multicommodity Transshipment Problem with Fixed Charges Converting to an MPS-Format SAS Data Set Migration to OPTMODEL: Assignment Migration to OPTMODEL: Multicommodity Transshipment
- References
| Converting Any PROC LP Format to an MPS-Format SAS Data Set |
The MPSOUT= option enables you to convert an input data set for the LP procedure into an MPS-format SAS data set. The converted data set is readable by the OPTLP and OPTMILP procedures.
The conversion can handle both linear and mixed integer linear programs. The _TYPE_ values for sensitivity analysis (PRICESEN), parametric programming (RHSSEN), and input basis (BASIS) are dropped. When multiple objective rows are present, only the first row is marked as the objective row. The remaining rows are marked as free rows. When multiple right-hand side (RHS) columns are present, only the first RHS column is processed. Constraints with a _TYPE_ value of SOSEQ or SOSLE are ignored. The MPSOUT= option does not output branching priorities specified for the VARSELECT=PRIOR option to a BRANCH section in the MPS-format SAS data set.
For information about how the contents of the MPS-format SAS data set are interpreted, see Chapter 9, The MPS-Format SAS Data Set (SAS/OR User's Guide: Mathematical Programming). For examples that demonstrate the use of the MPSOUT= option and migration to the OPTMODEL procedure, see the section Examples: LP Procedure.