- Function MatrixModifyRightHandSide(MP, row, value)
MatrixModifyRightHandSide
The procedure MatrixModifyRightHandSide
changes the right-hand-side
of a row in the matrix.
MatrixModifyRightHandSide(
MP, ! (input) a mathematical program
row, ! (input) a scalar value
value ! (input) a numerical expression
)
Arguments
- MP
A mathematical program that was previously solved. The mathematical program should be a linear or mixed-integer linear programming model.
- row
A scalar reference to an existing row in the matrix; this can not be the objective row.
- value
The new value that should be assigned to the right-hand-side of the row. This value should be unequal to
NA
andUNDF
(but might beINF
or-INF
).
Note
If you assign INF to the right-hand-side value of a row with type
'='
,MatrixModifyRightHandSide
will not produce an error, since you might want to change the type of this row into'<='
(usingMatrixModifyRowType
) immediately thereafter.After a call to
MatrixSolve
AIMMS checks for each modified row whether or not the right-hand-side value is valid for the current row type. If the row type is'='
then the right-hand-side value should be unequal toINF
and-INF
; if the row type is'<='
or'ranged'
then it should be unequal to-INF
.As of AIMMS release 3.5, the matrix manipulation procedures have become deprecated. New projects should use the GMP library instead. Please refer to Table 5 for a mapping of the matrix manipulation procedures to corresponding GMP procedures.
See also
The procedures MatrixModifyLeftHandSide
, MatrixModifyRowType
, MatrixSolve
. Matrix manipulation
routines are discussed in more detail in Implementing Advanced Algorithms for Mathematical Programs of the Language
Reference.