Package no.uib.cipr.matrix.sparse
Class CompColMatrix
- java.lang.Object
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- no.uib.cipr.matrix.AbstractMatrix
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- no.uib.cipr.matrix.sparse.CompColMatrix
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- All Implemented Interfaces:
java.lang.Iterable<MatrixEntry>
,Matrix
public class CompColMatrix extends AbstractMatrix
Compressed column storage (CCS) matrix
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Nested Class Summary
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Nested classes/interfaces inherited from interface no.uib.cipr.matrix.Matrix
Matrix.Norm
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Field Summary
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Fields inherited from class no.uib.cipr.matrix.AbstractMatrix
numColumns, numRows
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Constructor Summary
Constructors Constructor Description CompColMatrix(int numRows, int numColumns, int[][] nz)
Constructor for CompColMatrixCompColMatrix(MatrixVectorReader r)
Constructor for CompColMatrixCompColMatrix(Matrix A)
Constructor for CompColMatrixCompColMatrix(Matrix A, boolean deep)
Constructor for CompColMatrix
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
add(int row, int column, double value)
A(row,column) += value
CompColMatrix
copy()
Creates a deep copy of the matrixdouble
get(int row, int column)
ReturnsA(row,column)
int[]
getColumnPointers()
Returns the column pointersdouble[]
getData()
Returns the internal data storageint[]
getRowIndices()
Returns the row indicesjava.util.Iterator<MatrixEntry>
iterator()
Vector
multAdd(double alpha, Vector x, Vector y)
y = alpha*A*x + y
void
set(int row, int column, double value)
A(row,column) = value
Vector
transMult(Vector x, Vector y)
y = AT*x
Vector
transMultAdd(double alpha, Vector x, Vector y)
y = alpha*AT*x + y
CompColMatrix
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
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Constructor Detail
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CompColMatrix
public CompColMatrix(MatrixVectorReader r) throws java.io.IOException
Constructor for CompColMatrix- Parameters:
r
- Reader to get sparse matrix from- Throws:
java.io.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
public CompColMatrix(Matrix A, boolean deep)
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
public CompColMatrix(Matrix A)
Constructor for CompColMatrix- Parameters:
A
- Copies from this matrix. The copy will be deep
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Method Detail
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getColumnPointers
public int[] getColumnPointers()
Returns the column pointers
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getRowIndices
public int[] getRowIndices()
Returns the row indices
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getData
public double[] getData()
Returns the internal data storage
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multAdd
public Vector multAdd(double alpha, Vector x, Vector y)
Description copied from interface:Matrix
y = alpha*A*x + y
- Specified by:
multAdd
in interfaceMatrix
- Overrides:
multAdd
in classAbstractMatrix
x
- Vector of sizeA.numColumns()
y
- Vector of sizeA.numRows()
- Returns:
- y
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transMult
public Vector transMult(Vector x, Vector y)
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
public Vector transMultAdd(double alpha, Vector x, Vector y)
Description copied from interface:Matrix
y = alpha*AT*x + y
- Specified by:
transMultAdd
in interfaceMatrix
- Overrides:
transMultAdd
in classAbstractMatrix
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
public CompColMatrix 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
public java.util.Iterator<MatrixEntry> iterator()
- Specified by:
iterator
in interfacejava.lang.Iterable<MatrixEntry>
- Overrides:
iterator
in classAbstractMatrix
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zero
public CompColMatrix 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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