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Line 102: * The arrays {{math\|V}} and {{math\|COL_INDEX}} are of length {{math\|NNZ}}, and contain the non-zero values and the column indices of those values respectively * {{math\|COL_INDEX}} contains the column in which the corresponding entry {{math\|V}} is located. * The array {{math\|ROW_INDEX}} is of length {{math\|''m'' + ''1''}} and encodes the index in {{math\|V}} and {{math\|COL_INDEX}} where the given row starts. This is equivalent to {{math\|ROW_INDEX[j]}} encoding the total number of nonzeros above row {{math\|j}}. The last element is {{math\|NNZ}} , i.e., the fictitious index in {{Math\|V}} immediately after the last valid index {{math\|NNZ -− 1}}.<ref>{{cite book \|last1=Saad \|first1=Yousef \|title=Iterative methods for sparse linear systems \|date=2003 \|publisher=SIAM}}</ref> For example, the matrix

Sparse matrix: Difference between revisions