The MOSEK Python optimizer API manual Version 7.0 (Revision 141)

A.2. CLASS TASK 223
A.2.33
Task.getbarasparsity()
numnz = Task.getbarasparsity(idxij)
Obtains the sparsity pattern of the barA matrix.
Arguments
idxij : long[]
Position of each nonzero element in the vectorized form of Ā ij . Hence, idxij[k] is the
vector position of the element in row subi[k] and column subj[k] of Āij.
numnz : long
Number of nonzero elements in Ā.
Description:
The matrix Ā is assumed to be a sparse matrix of symmetric matrixes. This implies that many
of elements in Ā is likely to be zero matrixes. Therefore, in order to save space only nonzero
elementsin Ā are stored on vectorized form. This function is used to obtain the sparsity pattern
of Ā and the position of each nonzero element in the vectorized form of Ā.
A.2.34
Task.getbarcblocktriplet()
num = Task.getbarcblocktriplet(
subj,
subk,
subl,
valijkl)
Obtains barc in block triplet form.
Arguments
num : long
Number of elements in the block triplet form.
subj : int[]
Symmetric matrix variable index.
subk : int[]
Block row index.
subl : int[]
Block column index.