changeMatrixRow-methods: Change a Row in the Constraint Matrix of the Optimization...
In sybil: Efficient Constrained Based Modelling

Description Usage Arguments Methods Author(s) See Also

Change a row in the constraint matrix of the optimization problem.

## S4 method for signature 'optObj_cplexAPI'
changeMatrixRow(lp, i, j, val)

## S4 method for signature 'optObj_glpkAPI'
changeMatrixRow(lp, i, j, val)

## S4 method for signature 'optObj_lpSolveAPI'
changeMatrixRow(lp, i, j, val)

`lp`	An object extending class `optObj`.
`i`	A single numeric value giving the row index of the constraint matrix to change.
`j`	A numeric vector containing the column indices of the new non-zero elements.
`val`	A numeric vector of the same length as `j` containing the new non-zero elements.

signature(lp = "optObj_cplexAPI"): method to use with package optObj_cplexAPI. Only the columns given in argument j will be changed. All other columns stay the same.
signature(lp = "optObj_glpkAPI"): method to use with package optObj_glpkAPI. The row given in argument i will be reset completely.
signature(lp = "optObj_lpSolveAPI"): method to use with package optObj_lpSolveAPI. The row given in argument i will be reset completely.