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java.lang.Objectno.uib.cipr.matrix.AbstractMatrix
no.uib.cipr.matrix.SymmTridiagMatrix
no.uib.cipr.matrix.SPDTridiagMatrix
public class SPDTridiagMatrix
Symmetrical positive definite tridiagonal matrix. Same as
SymmTridiagMatrix
, and is used
as a marker class to allow for more efficient solvers.
Nested Class Summary |
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Nested classes/interfaces inherited from interface no.uib.cipr.matrix.Matrix |
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Matrix.Norm |
Field Summary |
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Fields inherited from class no.uib.cipr.matrix.AbstractMatrix |
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numColumns, numRows |
Constructor Summary | |
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SPDTridiagMatrix(int n)
Constructor for SPDTridiagMatrix |
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SPDTridiagMatrix(Matrix A)
Constructor for SPDTridiagMatrix |
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SPDTridiagMatrix(Matrix A,
boolean deep)
Constructor for SPDTridiagMatrix |
Method Summary | |
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SPDTridiagMatrix |
copy()
Creates a deep copy of the matrix |
Matrix |
solve(Matrix B,
Matrix X)
X = A\B . |
Methods inherited from class no.uib.cipr.matrix.SymmTridiagMatrix |
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add, get, getDiagonal, getOffDiagonal, iterator, set, solve, transpose, transSolve, transSolve, zero |
Methods inherited from class no.uib.cipr.matrix.AbstractMatrix |
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add, add, check, checkMultAdd, checkMultAdd, checkRank1, checkRank1, checkRank2, checkRank2, checkSize, checkSolve, checkSolve, checkTransABmultAdd, checkTransAmultAdd, checkTransBmultAdd, checkTransMultAdd, checkTranspose, checkTranspose, checkTransRank1, checkTransRank2, isSquare, max, max, mult, mult, mult, mult, multAdd, multAdd, multAdd, multAdd, norm, norm1, normF, normInf, numColumns, numRows, rank1, rank1, rank1, rank1, rank1, rank1, rank2, rank2, rank2, rank2, scale, set, set, toString, transABmult, transABmult, transABmultAdd, transABmultAdd, transAmult, transAmult, transAmultAdd, transAmultAdd, transBmult, transBmult, transBmultAdd, transBmultAdd, transMult, transMult, transMultAdd, transMultAdd, transpose, transRank1, transRank1, transRank2, transRank2 |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public SPDTridiagMatrix(int n)
n
- Size of the matrix. Since the matrix must be square, this
equals both the number of rows and columnspublic SPDTridiagMatrix(Matrix A)
A
- Matrix to copy contents from. Only main and the superdiagonal
is copied overpublic SPDTridiagMatrix(Matrix A, boolean deep)
A
- Matrix to copy contents from. Only main and the superdiagonal
is copied overdeep
- True for a deep copy. For shallow copies A
must
be a SymmTridiagMatrix
Method Detail |
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public SPDTridiagMatrix copy()
Matrix
copy
in interface Matrix
copy
in class SymmTridiagMatrix
public Matrix solve(Matrix B, Matrix X)
Matrix
X = A\B
. Not all matrices support this operation, those
that do not throw UnsupportedOperationException
. Note
that it is often more efficient to use a matrix decomposition and its
associated solver
solve
in interface Matrix
solve
in class SymmTridiagMatrix
B
- Matrix with the same number of rows as A
, and
the same number of columns as X
X
- Matrix with a number of rows equal A.numColumns()
,
and the same number of columns as B
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