no.uib.cipr.matrix.sparse
Class FlexCompColMatrix

java.lang.Object
  extended by no.uib.cipr.matrix.AbstractMatrix
      extended by no.uib.cipr.matrix.sparse.FlexCompColMatrix
All Implemented Interfaces:
Iterable<MatrixEntry>, Matrix

public class FlexCompColMatrix
extends AbstractMatrix

Matrix stored column-wise into sparse vectors


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
FlexCompColMatrix(int numRows, int numColumns)
          Constructor for FlexCompColMatrix
FlexCompColMatrix(Matrix A)
          Constructor for FlexCompColMatrix
FlexCompColMatrix(Matrix A, boolean deep)
          Constructor for FlexCompColMatrix
 
Method Summary
 void add(int row, int column, double value)
          A(row,column) += value
 void compact()
          Tries to store the matrix as compactly as possible
 FlexCompColMatrix copy()
          Creates a deep copy of the matrix
 double get(int row, int column)
          Returns A(row,column)
 SparseVector getColumn(int i)
          Returns the given column
 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
 void setColumn(int i, SparseVector x)
          Sets the given column equal the passed vector
 Vector transMultAdd(double alpha, Vector x, Vector y)
          y = alpha*AT*x + y
 FlexCompColMatrix 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, 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
 

Constructor Detail

FlexCompColMatrix

public FlexCompColMatrix(int numRows,
                         int numColumns)
Constructor for FlexCompColMatrix

Parameters:
numRows - Number of rows
numColumns - Number of column

FlexCompColMatrix

public FlexCompColMatrix(Matrix A,
                         boolean deep)
Constructor for FlexCompColMatrix

Parameters:
A - Matrix to copy contents from
deep - True for a deep copy, false for a reference copy. A reference copy can only be made of an FlexCompColMatrix

FlexCompColMatrix

public FlexCompColMatrix(Matrix A)
Constructor for FlexCompColMatrix

Parameters:
A - Matrix to copy contents from. The copy will be deep
Method Detail

getColumn

public SparseVector getColumn(int i)
Returns the given column


setColumn

public void setColumn(int i,
                      SparseVector x)
Sets the given column equal the passed vector


multAdd

public Vector multAdd(double alpha,
                      Vector x,
                      Vector y)
Description copied from interface: Matrix
y = alpha*A*x + y

Specified by:
multAdd in interface Matrix
Overrides:
multAdd in class AbstractMatrix
x - Vector of size A.numColumns()
y - Vector of size A.numRows()
Returns:
y

transMultAdd

public Vector transMultAdd(double alpha,
                           Vector x,
                           Vector y)
Description copied from interface: Matrix
y = alpha*AT*x + y

Specified by:
transMultAdd in interface Matrix
Overrides:
transMultAdd in class AbstractMatrix
x - Vector of size A.numRows()
y - Vector of size A.numColumns()
Returns:
y

add

public void add(int row,
                int column,
                double value)
Description copied from interface: Matrix
A(row,column) += value

Specified by:
add in interface Matrix
Overrides:
add in class AbstractMatrix

set

public void set(int row,
                int column,
                double value)
Description copied from interface: Matrix
A(row,column) = value

Specified by:
set in interface Matrix
Overrides:
set in class AbstractMatrix

get

public double get(int row,
                  int column)
Description copied from interface: Matrix
Returns A(row,column)

Specified by:
get in interface Matrix
Overrides:
get in class AbstractMatrix

iterator

public Iterator<MatrixEntry> iterator()
Specified by:
iterator in interface Iterable<MatrixEntry>
Overrides:
iterator in class AbstractMatrix

copy

public FlexCompColMatrix copy()
Description copied from interface: Matrix
Creates a deep copy of the matrix

Specified by:
copy in interface Matrix
Overrides:
copy in class AbstractMatrix
Returns:
A

zero

public FlexCompColMatrix 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 interface Matrix
Overrides:
zero in class AbstractMatrix
Returns:
A

compact

public void compact()
Tries to store the matrix as compactly as possible



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