public class SymmTridiagEVD
extends java.lang.Object
Constructor and Description |
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SymmTridiagEVD(int n)
Sets up an eigenvalue decomposition for symmetrical, tridiagonal
matrices.
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SymmTridiagEVD(int n,
boolean vectors)
Sets up an eigenvalue decomposition for symmetrical, tridiagonal
matrices.
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SymmTridiagEVD(int n,
boolean vectors,
double abstol)
Sets up an eigenvalue decomposition for symmetrical, tridiagonal matrices
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SymmTridiagEVD(int n,
double abstol)
Sets up an eigenvalue decomposition for symmetrical, tridiagonal
matrices.
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Modifier and Type | Method and Description |
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SymmTridiagEVD |
factor(SymmTridiagMatrix A)
Computes the eigenvalue decomposition of the given matrix
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static SymmTridiagEVD |
factorize(Matrix A)
Convenience method for computing the full eigenvalue decomposition of the
given matrix
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double[] |
getEigenvalues()
Gets the eigenvalues (stored in ascending order)
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DenseMatrix |
getEigenvectors()
Gets the eigenvectors, if available
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boolean |
hasEigenvectors()
True if the eigenvectors have been computed
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public SymmTridiagEVD(int n)
n
- Size of the matrixpublic SymmTridiagEVD(int n, double abstol)
n
- Size of the matrixabstol
- Absolute tolerance criteriapublic SymmTridiagEVD(int n, boolean vectors)
n
- Size of the matrixvectors
- True to compute the eigenvectors, false for just the
eigenvaluespublic SymmTridiagEVD(int n, boolean vectors, double abstol)
n
- Size of the matrixvectors
- True to compute the eigenvectors, false for just the
eigenvaluesabstol
- Absolute tolerance criteriapublic static SymmTridiagEVD factorize(Matrix A) throws NotConvergedException
A
- Matrix to factorize. Main diagonal and superdiagonal is
copied, and the matrix is not modifiedNotConvergedException
public SymmTridiagEVD factor(SymmTridiagMatrix A) throws NotConvergedException
A
- Matrix to factorize. Overwritten on returnNotConvergedException
public double[] getEigenvalues()
public DenseMatrix getEigenvectors()
public boolean hasEigenvectors()