Package no.uib.cipr.matrix.sparse
Class CompColMatrix
java.lang.Object
no.uib.cipr.matrix.AbstractMatrix
no.uib.cipr.matrix.sparse.CompColMatrix
- All Implemented Interfaces:
Iterable<MatrixEntry>
,Matrix
Compressed column storage (CCS) matrix
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Nested Class Summary
Nested classes/interfaces inherited from interface no.uib.cipr.matrix.Matrix
Matrix.Norm
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Field Summary
Fields inherited from class no.uib.cipr.matrix.AbstractMatrix
numColumns, numRows
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Constructor Summary
ConstructorsConstructorDescriptionCompColMatrix
(int numRows, int numColumns, int[][] nz) Constructor for CompColMatrixConstructor for CompColMatrixConstructor for CompColMatrixCompColMatrix
(Matrix A, boolean deep) Constructor for CompColMatrix -
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)
int[]
Returns the column pointersdouble[]
getData()
Returns the internal data storageint[]
Returns the row indicesiterator()
y = alpha*A*x + y
void
set
(int row, int column, double value) A(row,column) = value
y = AT*x
transMultAdd
(double alpha, Vector x, Vector y) y = alpha*AT*x + y
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, mult, mult, multAdd, multAdd, multAdd, norm, norm1, normF, normInf, numColumns, numRows, rank1, rank1, rank1, rank1, rank1, rank1, rank2, rank2, rank2, rank2, scale, set, set, solve, solve, toString, transABmult, transABmult, transABmultAdd, transABmultAdd, transAmult, transAmult, transAmultAdd, transAmultAdd, transBmult, transBmult, transBmultAdd, transBmultAdd, transMult, transMultAdd, transpose, transpose, transRank1, transRank1, transRank2, transRank2, transSolve, transSolve
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
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Constructor Details
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CompColMatrix
Constructor for CompColMatrix- Parameters:
r
- Reader to get sparse matrix from- Throws:
IOException
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CompColMatrix
public CompColMatrix(int numRows, int numColumns, int[][] nz) Constructor for CompColMatrix- Parameters:
numRows
- Number of rowsnumColumns
- Number of columnsnz
- The nonzero column indices on each column
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CompColMatrix
Constructor for CompColMatrix- Parameters:
A
- Copies from this matrixdeep
- True if the copy is to be deep. If it is a shallow copy,A
must be aCompColMatrix
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CompColMatrix
Constructor for CompColMatrix- Parameters:
A
- Copies from this matrix. The copy will be deep
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Method Details
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getColumnPointers
public int[] getColumnPointers()Returns the column pointers -
getRowIndices
public int[] getRowIndices()Returns the row indices -
getData
public double[] getData()Returns the internal data storage -
multAdd
Description copied from interface:Matrix
y = alpha*A*x + y
- Specified by:
multAdd
in interfaceMatrix
- Overrides:
multAdd
in classAbstractMatrix
- Parameters:
x
- Vector of sizeA.numColumns()
y
- Vector of sizeA.numRows()
- Returns:
- y
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transMult
Description copied from interface:Matrix
y = AT*x
- Specified by:
transMult
in interfaceMatrix
- Overrides:
transMult
in classAbstractMatrix
- Parameters:
x
- Vector of sizeA.numRows()
y
- Vector of sizeA.numColumns()
- Returns:
- y
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transMultAdd
Description copied from interface:Matrix
y = alpha*AT*x + y
- Specified by:
transMultAdd
in interfaceMatrix
- Overrides:
transMultAdd
in classAbstractMatrix
- Parameters:
x
- Vector of sizeA.numRows()
y
- Vector of sizeA.numColumns()
- Returns:
- y
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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 classAbstractMatrix
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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 classAbstractMatrix
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get
public double get(int row, int column) Description copied from interface:Matrix
ReturnsA(row,column)
- Specified by:
get
in interfaceMatrix
- Overrides:
get
in classAbstractMatrix
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copy
Description copied from interface:Matrix
Creates a deep copy of the matrix- Specified by:
copy
in interfaceMatrix
- Overrides:
copy
in classAbstractMatrix
- Returns:
- A
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iterator
- Specified by:
iterator
in interfaceIterable<MatrixEntry>
- Overrides:
iterator
in classAbstractMatrix
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zero
Description copied from interface:Matrix
Zeros all the entries in the matrix, while preserving any underlying structure. Useful for general, unstructured matrices.- Specified by:
zero
in interfaceMatrix
- Overrides:
zero
in classAbstractMatrix
- Returns:
- A
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