rLSsolveFileLP: Optimizes a large LP from an MPS file.

In rLindo: R Interface to LINDO API

Description

R interface function for LINDO API function LSsolveFileLP. For more information, please refer to LINDO API User Manual.

Usage

rLSsolveFileLP(model,szFileNameMPS,szFileNameSol,nNoOfColsEvaluatedPerSet,
               nNoOfColsSelectedPerSet,nTimeLimitSec)

Arguments

model	A LINDO API model object, returned by rLScreateModel.
szFileNameMPS	The path and name of the input MPS file.
szFileNameSol	The path and name of the output solution file.
nNoOfColsEvaluatedPerSet	Number of columns evaluated together in one set.
nNoOfColsSelectedPerSet	Number of columns selected from one set.
nTimeLimitSec	Time limit for the program in seconds.

Details

This routine is appropriate only for LP models with many more columns, e.g., millions, than rows. It is appropriate for LP's that might otherwise not easily fit into available memory.

Value

An R list object with components:

ErrorCode	Zero if successful, nonzero otherwise.
pnSolStatusParam	The status of the optimization.
pnNoOfConsMps	Number of constraints in the problem.
pnNoOfColsMps	Number of variables (columns) in the problem.
pnErrorLine	Line number at which a structural error was found.

References

LINDO SYSTEMS home page at www.lindo.com

rLindo documentation built on May 1, 2019, 10:11 p.m.