chgQPcoefCPLEX: Change a Single Coefficient in the Quadratic Objective of a...
In cplexAPI: R Interface to C API of IBM ILOG CPLEX

Description Usage Arguments Details Value Author(s) References See Also

View source: R/cplexAPI.R

Low level interface function to the IBM ILOG CPLEX function CPXchgqpcoef. Consult the IBM ILOG CPLEX documentation for more detailed information.

1	chgQPcoefCPLEX(env, lp, i, j, val)

`env`	An object of class `"cplexPtr"` as returned by `openEnvCPLEX`. This is basically a pointer to an IBM ILOG CPLEX environment.
`lp`	An object of class `"cplexPtr"` as returned by `initProbCPLEX`. This is basically a pointer to an IBM ILOG CPLEX problem object.
`i`	The first variable number.
`j`	The second variable number.
`val`	The new coefficient value.

Interface to the C function chgQPcoef which calls the CPLEX function CPXchgqpcoef.

Zero if successful, otherwise nonzero.

Gabriel Gelius-Dietrich <geliudie@uni-duesseldorf.de>

Maintainer: Mayo Roettger <mayo.roettger@hhu.de>

The IBM ILOG CPLEX home page at https://www.ibm.com/support/knowledgecenter/SSSA5P.

cplexAPI documentation built on Oct. 23, 2020, 5:45 p.m.

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