Struct nalgebra::linalg::SymmetricEigen

pub struct SymmetricEigen<N: ComplexField, D: Dim> where
    DefaultAllocator: Allocator<N, D, D> + Allocator<N::RealField, D>,  {
    pub eigenvectors: MatrixN<N, D>,
    pub eigenvalues: VectorN<N::RealField, D>,
}

Eigendecomposition of a symmetric matrix.

Fields

eigenvectors: MatrixN<N, D>

The eigenvectors of the decomposed matrix.

eigenvalues: VectorN<N::RealField, D>

The unsorted eigenvalues of the decomposed matrix.

Implementations

impl<N: ComplexField, D: Dim> SymmetricEigen<N, D> where
    DefaultAllocator: Allocator<N, D, D> + Allocator<N::RealField, D>, 

pub fn new(m: MatrixN<N, D>) -> Self where
    D: DimSub<U1>,
    DefaultAllocator: Allocator<N, DimDiff<D, U1>> + Allocator<N::RealField, DimDiff<D, U1>>, 

Computes the eigendecomposition of the given symmetric matrix.

Only the lower-triangular parts (including its diagonal) of m is read.

pub fn try_new(
    m: MatrixN<N, D>,
    eps: N::RealField,
    max_niter: usize
) -> Option<Self> where
    D: DimSub<U1>,
    DefaultAllocator: Allocator<N, DimDiff<D, U1>> + Allocator<N::RealField, DimDiff<D, U1>>, 

Computes the eigendecomposition of the given symmetric matrix with user-specified convergence parameters.

Only the lower-triangular part (including its diagonal) of m is read.

Arguments

• eps − tolerance used to determine when a value converged to 0.
• max_niter − maximum total number of iterations performed by the algorithm. If this number of iteration is exceeded, None is returned. If niter == 0, then the algorithm continues indefinitely until convergence.

pub fn recompose(&self) -> MatrixN<N, D>

Rebuild the original matrix.

This is useful if some of the eigenvalues have been manually modified.

Trait Implementations

impl<N: Clone + ComplexField, D: Clone + Dim> Clone for SymmetricEigen<N, D> where
    DefaultAllocator: Allocator<N, D, D> + Allocator<N::RealField, D>,
    N::RealField: Clone, 

fn clone(&self) -> SymmetricEigen<N, D>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<N: Debug + ComplexField, D: Debug + Dim> Debug for SymmetricEigen<N, D> where
    DefaultAllocator: Allocator<N, D, D> + Allocator<N::RealField, D>,
    N::RealField: Debug, 

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<N: ComplexField, D: Dim> Copy for SymmetricEigen<N, D> where
    DefaultAllocator: Allocator<N, D, D> + Allocator<N::RealField, D>,
    MatrixN<N, D>: Copy,
    VectorN<N::RealField, D>: Copy,