Package no.uib.cipr.matrix
Class UnitUpperTriangDenseMatrix
java.lang.Object
no.uib.cipr.matrix.AbstractMatrix
no.uib.cipr.matrix.UpperTriangDenseMatrix
no.uib.cipr.matrix.UnitUpperTriangDenseMatrix
- All Implemented Interfaces:
Iterable<MatrixEntry>
,Matrix
Unit upper triangular dense matrix. Almost the same as the
UpperTriangDenseMatrix
,
but additionally assumes the main diagonal to be all ones. However it does
not access it, so it may be actually be different.-
Nested Class Summary
Nested classes/interfaces inherited from interface no.uib.cipr.matrix.Matrix
Matrix.Norm
-
Field Summary
Fields inherited from class no.uib.cipr.matrix.AbstractMatrix
numColumns, numRows
-
Constructor Summary
ConstructorsConstructorDescriptionUnitUpperTriangDenseMatrix
(int n) Constructor for UnitUpperTriangDenseMatrixConstructor for UnitUpperTriangDenseMatrix.UnitUpperTriangDenseMatrix
(Matrix A, boolean deep) Constructor for UnitUpperTriangDenseMatrix. -
Method Summary
Modifier and TypeMethodDescriptionvoid
add
(int row, int column, double value) A(row,column) += value
copy()
Creates a deep copy of the matrixdouble
get
(int row, int column) ReturnsA(row,column)
double[]
getData()
Returns the matrix contents.iterator()
C = alpha*A*B
y = alpha*A*x
void
set
(int row, int column, double value) A(row,column) = value
A=B
.X = A\B
.x = A\b
.transAmult
(double alpha, Matrix B, Matrix C) C = alpha*AT*B
y = alpha*AT*x
transSolve
(Matrix B, Matrix X) X = AT\B
.transSolve
(Vector b, Vector x) x = AT\b
.zero()
Zeros all the entries in the matrix, while preserving any underlying structure.Methods inherited from class no.uib.cipr.matrix.AbstractMatrix
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, multAdd, multAdd, multAdd, multAdd, norm, norm1, normF, normInf, numColumns, numRows, rank1, rank1, rank1, rank1, rank1, rank1, rank2, rank2, rank2, rank2, scale, set, toString, transABmult, transABmult, transABmultAdd, transABmultAdd, transAmult, transAmultAdd, transAmultAdd, transBmult, transBmult, transBmultAdd, transBmultAdd, transMult, transMultAdd, transMultAdd, transpose, transpose, transRank1, transRank1, transRank2, transRank2
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface java.lang.Iterable
forEach, spliterator
-
Constructor Details
-
UnitUpperTriangDenseMatrix
public UnitUpperTriangDenseMatrix(int n) Constructor for UnitUpperTriangDenseMatrix- Parameters:
n
- Size of the matrix. Since the matrix must be square, this equals both the number of rows and columns
-
UnitUpperTriangDenseMatrix
Constructor for UnitUpperTriangDenseMatrix. Matrix is copied from the supplied matrix- Parameters:
A
- Matrix to copy from. Only the strictly upper triangular part is copied
-
UnitUpperTriangDenseMatrix
Constructor for UnitUpperTriangDenseMatrix. Matrix is copied from the supplied matrix- Parameters:
A
- Matrix to copy from. Only the strictly upper triangular part is copieddeep
- If true,A
is copied, else a shallow copy is made and the matrices share underlying storage. For this,A
must be a dense matrix
-
-
Method Details
-
add
public void add(int row, int column, double value) Description copied from interface:Matrix
A(row,column) += value
- Specified by:
add
in interfaceMatrix
- Overrides:
add
in classUpperTriangDenseMatrix
-
get
public double get(int row, int column) Description copied from interface:Matrix
ReturnsA(row,column)
- Specified by:
get
in interfaceMatrix
- Overrides:
get
in classUpperTriangDenseMatrix
-
set
public void set(int row, int column, double value) Description copied from interface:Matrix
A(row,column) = value
- Specified by:
set
in interfaceMatrix
- Overrides:
set
in classUpperTriangDenseMatrix
-
copy
Description copied from interface:Matrix
Creates a deep copy of the matrix- Specified by:
copy
in interfaceMatrix
- Overrides:
copy
in classUpperTriangDenseMatrix
- Returns:
- A
-
zero
Description copied from interface:Matrix
Zeros all the entries in the matrix, while preserving any underlying structure. Useful for general, unstructured matrices. -
mult
Description copied from interface:Matrix
y = alpha*A*x
- Specified by:
mult
in interfaceMatrix
- Overrides:
mult
in classAbstractMatrix
- Parameters:
x
- Vector of sizeA.numColumns()
y
- Vector of sizeA.numRows()
- Returns:
- y
-
transMult
Description copied from interface:Matrix
y = alpha*AT*x
- Specified by:
transMult
in interfaceMatrix
- Overrides:
transMult
in classAbstractMatrix
- Parameters:
x
- Vector of sizeA.numRows()
y
- Vector of sizeA.numColumns()
- Returns:
- y
-
mult
Description copied from interface:Matrix
C = alpha*A*B
- Specified by:
mult
in interfaceMatrix
- Overrides:
mult
in classAbstractMatrix
- Parameters:
B
- Matrix such thatB.numRows() == A.numColumns()
andB.numColumns() == C.numColumns()
C
- Matrix such thatC.numRows() == A.numRows()
andB.numColumns() == C.numColumns()
- Returns:
- C
-
transAmult
Description copied from interface:Matrix
C = alpha*AT*B
- Specified by:
transAmult
in interfaceMatrix
- Overrides:
transAmult
in classAbstractMatrix
- Parameters:
B
- Matrix such thatB.numRows() == A.numRows()
andB.numColumns() == C.numColumns()
C
- Matrix such thatC.numRows() == A.numColumns()
andB.numColumns() == C.numColumns()
- Returns:
- C
-
solve
Description copied from interface:Matrix
X = A\B
. Not all matrices support this operation, those that do not throwUnsupportedOperationException
. Note that it is often more efficient to use a matrix decomposition and its associated solver- Specified by:
solve
in interfaceMatrix
- Overrides:
solve
in classAbstractMatrix
- Parameters:
B
- Matrix with the same number of rows asA
, and the same number of columns asX
X
- Matrix with a number of rows equalA.numColumns()
, and the same number of columns asB
- Returns:
- X
-
solve
Description copied from interface:Matrix
x = A\b
. Not all matrices support this operation, those that do not throwUnsupportedOperationException
. Note that it is often more efficient to use a matrix decomposition and its associated solver- Specified by:
solve
in interfaceMatrix
- Overrides:
solve
in classAbstractMatrix
- Parameters:
b
- Vector of sizeA.numRows()
x
- Vector of sizeA.numColumns()
- Returns:
- x
-
transSolve
Description copied from interface:Matrix
X = AT\B
. Not all matrices support this operation, those that do not throwUnsupportedOperationException
. Note that it is often more efficient to use a matrix decomposition and its associated transpose solver- Specified by:
transSolve
in interfaceMatrix
- Overrides:
transSolve
in classAbstractMatrix
- Parameters:
B
- Matrix with a number of rows equalA.numColumns()
, and the same number of columns asX
X
- Matrix with the same number of rows asA
, and the same number of columns asB
- Returns:
- X
-
transSolve
Description copied from interface:Matrix
x = AT\b
. Not all matrices support this operation, those that do not throwUnsupportedOperationException
. Note that it is often more efficient to use a matrix decomposition and its associated solver- Specified by:
transSolve
in interfaceMatrix
- Overrides:
transSolve
in classAbstractMatrix
- Parameters:
b
- Vector of sizeA.numColumns()
x
- Vector of sizeA.numRows()
- Returns:
- x
-
iterator
- Specified by:
iterator
in interfaceIterable<MatrixEntry>
- Overrides:
iterator
in classAbstractMatrix
-
getData
public double[] getData()Returns the matrix contents. Ordering depends on the underlying storage assumptions -
set
Description copied from interface:Matrix
A=B
. The matrices must be of the same size- Specified by:
set
in interfaceMatrix
- Overrides:
set
in classAbstractMatrix
- Returns:
- A
-