rLindo (version 8.0.1)

rLSgetQCDatai: Retrieve the quadratic data associated with constraint i from a model data structure.

Description

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

Usage

rLSgetQCDatai(model,iCon)

Arguments

model

A LINDO API model object, returned by rLScreateModel.

iCon

The index of the constraint for which the quadratic data will be retrieved.

Value

An R list object with components:

ErrorCode

Zero if successful, nonzero otherwise.

pnQCnnz

An integer indicating the number of nonzeros in the coefficient matrix of the quadratic term.

paiQCcols1

An integer array containing the index of the first variable defining each quadratic term.

paiQCcols2

An integer array containing the index of the second variable defining each quadratic term.

padQCcoef

A double array containing the nonzero coefficients in the quadratic matrix.

References

LINDO SYSTEMS home page at www.lindo.com

See Also

rLSgetQCData