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problem.getQRowQMatrixTriplets

Purpose
Returns the nonzeros in a quadratic constraint coefficients matrix as triplets (index pairs with coefficients). To achieve maximum efficiency, problem.getQRowQMatrixTriplets returns the lower triangular part of this matrix only.
Topic areas
Problem Information, Quadratic
Synopsis
rowqcol1, rowqcol2, rowqcoef = problem.getQRowQMatrixTriplets(row)
Argument
row 
Index of the row for which the quadratic coefficients are to be returned.
Return value
rowqcol1 
First index in the triplets.
rowqcol2 
Second index in the triplets.
rowqcoef 
Coefficients in the triplets.
Further information
1. If a row index of -1 is used, the function returns the quadratic coefficients for the objective function.
2. Argument row may contain xpress.constraint objects instead of indices.
Related topics
problem.loadQCQP, problem.getQRowCoeff, problem.addQMatrix, problem.chgQRowCoeff, problem.getQRowQMatrix, problem.getQRows, problem.chgQObj, problem.chgMQObj, problem.getQObj.

Parent Topic Methods of the class problem

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