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Eigen  3.3.9

Detailed Description

Provides QR decomposition for sparse matrices.

This module provides a simplicial version of the left-looking Sparse QR decomposition. The columns of the input matrix should be reordered to limit the fill-in during the decomposition. Built-in methods (COLAMD, AMD) or external methods (METIS) can be used to this end. See the OrderingMethods module for the list of built-in and external ordering methods.

#include <Eigen/SparseQR>


class  Eigen::SparseQR< _MatrixType, _OrderingType >
 Sparse left-looking rank-revealing QR factorization. More...