problem.getqrowqmatrixtriplets
problem.getqrowqmatrixtriplets |
Purpose
Returns the nonzeros in a quadratic constraint coefficients matrix as triplets (index pairs with coefficients). To achieve maximum efficiency,
getqrowqmatrixtriplets returns the lower triangular part of this matrix only.
Synopsis
problem.getqrowqmatrixtriplets(irow, mqcol1, mqcol2, dqe)
Arguments
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irow
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Row (i.e.
xpress.constraint object, index, or name) for which the quadratic coefficients are to be returned.
|
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nqelem
|
Argument used to return the number of quadratic coefficients in the row.
|
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mqcol1
|
First index in the triplets. May be
None if not required.
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mqcol2
|
Second index in the triplets. May be
None if not required.
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dqe
|
Coefficients in the triplets. May be
None if not required.
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Further information
If a row index of
-1 is used, the function returns the quadratic coefficients for the objective function.
Related topics
problem.loadproblem,
problem.getqrowcoeff,
problem.addqmatrix,
problem.chgqrowcoeff,
problem.getqrowqmatrix,
problem.getqrows,
problem.chgqobj,
problem.chgmqobj,
problem.getqobj.