An array containing row and column indices to ignore.
- iOS 11.0+
- macOS 10.13+
- Mac Catalyst 13.0+
- tvOS 11.0+
- watchOS 4.0+
If this array is not
ignore provides a list of rows and columns to ignore, terminated by a negative index.
The row and column indices are for the actual matrix, not its block structure, so 0 indicates the first row, not the first blockSize rows.
In the symmetric case (Cholesky, LDLᵀ), each entry indicates that the matching row and column should be ignored.
In the unsymmetric case (QR, Cholesky AᵀA), consider the matrix,
A, given the value
m, that is defined as either of the following:
m = Aif
.structure .row Count * A .block Size
Ais not transposed
m = Aif
.structure .column Count * A .block Size
In this case, an index less than
m indicates that row
m should be ignored. An index
i, greater than
m, indicates that column
i - m should be ignored.