java.lang.Object
- no.uib.cipr.matrix.AbstractMatrix
- - no.uib.cipr.matrix.sparse.CompColMatrix

All Implemented Interfaces:

java.lang.Iterable<MatrixEntry>, Matrix
```
public class CompColMatrix
extends AbstractMatrix
```
Compressed column storage (CCS) matrix

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

Constructors
Constructor	Description
`CompColMatrix(int numRows, int numColumns, int[][] nz)`	Constructor for CompColMatrix
`CompColMatrix(MatrixVectorReader r)`	Constructor for CompColMatrix
`CompColMatrix(Matrix A)`	Constructor for CompColMatrix
`CompColMatrix(Matrix A, boolean deep)`	Constructor for CompColMatrix

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 matrix
`double`	`get(int row, int column)`	Returns `A(row,column)`
`int[]`	`getColumnPointers()`	Returns the column pointers
`double[]`	`getData()`	Returns the internal data storage
`int[]`	`getRowIndices()`	Returns the row indices
`java.util.Iterator<MatrixEntry>`	`iterator()`
`Vector`	`multAdd(double alpha, Vector x, Vector y)`	`y = alphaAx + y`
`void`	`set(int row, int column, double value)`	`A(row,column) = value`
`Vector`	`transMult(Vector x, Vector y)`	`y = A^T*x`
`Vector`	`transMultAdd(double alpha, Vector x, Vector y)`	`y = alphaA^Tx + 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

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 Detail
  - CompColMatrix
```
public CompColMatrix(MatrixVectorReader r)
              throws java.io.IOException
```
    Constructor for CompColMatrix
    
    Parameters:
    
    r - Reader to get sparse matrix from
    
    Throws:
    
    java.io.IOException
  - CompColMatrix
```
public CompColMatrix(int numRows,
                     int numColumns,
                     int[][] nz)
```
    Constructor for CompColMatrix
    
    Parameters:
    
    numRows - Number of rows
    
    numColumns - Number of columns
    
    nz - The nonzero column indices on each column
  - CompColMatrix
```
public CompColMatrix(Matrix A,
                     boolean deep)
```
    Constructor for CompColMatrix
    
    Parameters:
    
    A - Copies from this matrix
    
    deep - True if the copy is to be deep. If it is a shallow copy, A must be a CompColMatrix
  - CompColMatrix
```
public CompColMatrix(Matrix A)
```
    Constructor for CompColMatrix
    
    Parameters:
    
    A - Copies from this matrix. The copy will be deep
- Method Detail
  - 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
```
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
  - transMult
```
public Vector transMult(Vector x,
                        Vector y)
```
    Description copied from interface: Matrix
    
    y = A^T*x
    
    Specified by:
    
    transMult in interface Matrix
    
    Overrides:
    
    transMult in class AbstractMatrix
    
    Parameters:
    
    x - Vector of size A.numRows()
    
    y - Vector of size A.numColumns()
    
    Returns:
    
    y
  - transMultAdd
```
public Vector transMultAdd(double alpha,
                           Vector x,
                           Vector y)
```
    Description copied from interface: Matrix
    
    y = alpha*A^T*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
  - 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
  - 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
  - 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
  - copy
```
public CompColMatrix 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
  - iterator
```
public java.util.Iterator<MatrixEntry> iterator()
```
    Specified by:
    
    iterator in interface java.lang.Iterable<MatrixEntry>
    
    Overrides:
    
    iterator in class AbstractMatrix
  - 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 interface Matrix
    
    Overrides:
    
    zero in class AbstractMatrix
    
    Returns:
    
    A

Class CompColMatrix

Nested Class Summary

Nested classes/interfaces inherited from interface no.uib.cipr.matrix.Matrix

Field Summary

Fields inherited from class no.uib.cipr.matrix.AbstractMatrix

Constructor Summary

Method Summary

Methods inherited from class no.uib.cipr.matrix.AbstractMatrix

Methods inherited from class java.lang.Object

Methods inherited from interface java.lang.Iterable

Constructor Detail

CompColMatrix

CompColMatrix

CompColMatrix

CompColMatrix

Method Detail

getColumnPointers

getRowIndices

getData

multAdd

transMult

transMultAdd

set

add

get

copy

iterator

zero