rLSsolveFileLP: Optimizes a large LP from an MPS file.
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
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.
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.
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.
References
LINDO SYSTEMS home page at www.lindo.com