Eigen  3.4.90 (git rev a4098ac676528a83cfb73d4d26ce1b42ec05f47c)
Eigen::Diagonal< MatrixType, DiagIndex_ > Class Template Reference

Detailed Description

template<typename MatrixType, int DiagIndex_>
class Eigen::Diagonal< MatrixType, DiagIndex_ >

Expression of a diagonal/subdiagonal/superdiagonal in a matrix.

Template Parameters
MatrixTypethe type of the object in which we are taking a sub/main/super diagonal
DiagIndexthe index of the sub/super diagonal. The default is 0 and it means the main diagonal. A positive value means a superdiagonal, a negative value means a subdiagonal. You can also use DynamicIndex so the index can be set at runtime.

The matrix is not required to be square.

This class represents an expression of the main diagonal, or any sub/super diagonal of a square matrix. It is the return type of MatrixBase::diagonal() and MatrixBase::diagonal(Index) and most of the time this is the only way it is used.

See also
MatrixBase::diagonal(), MatrixBase::diagonal(Index)

Inherits internal::dense_xpr_base::type.


The documentation for this class was generated from the following file: