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org.jfree.data.xy

Class MatrixSeries

Implemented Interfaces:
Cloneable, Serializable
Known Direct Subclasses:
NormalizedMatrixSeries
public class MatrixSeries
extends Series
implements Serializable
Represents a dense matrix M[i,j] where each Mij item of the matrix has a value (default is 0).

Field Summary

protected double[][]
data
Series matrix values

Constructor Summary

MatrixSeries(String name, int rows, int columns)
Constructs a new matrix series.

Method Summary

boolean
equals(Object obj)
Tests this object instance for equality with an arbitrary object.
double
get(int i, int j)
Returns the value of the specified item in this matrix series.
int
getColumnsCount()
Returns the number of columns in this matrix series.
Number
getItem(int itemIndex)
Return the matrix item at the specified index.
int
getItemColumn(int itemIndex)
Returns the column of the specified item.
int
getItemCount()
Returns the number of items in the series.
int
getItemRow(int itemIndex)
Returns the row of the specified item.
int
getRowCount()
Returns the number of rows in this matrix series.
void
update(int i, int j, double mij)
Updates the value of the specified item in this matrix series.
void
zeroAll()
Sets all matrix values to zero and sends a SeriesChangeEvent to all registered listeners.

Methods inherited from class org.jfree.data.general.Series

addChangeListener, addPropertyChangeListener, clone, equals, firePropertyChange, fireSeriesChanged, getDescription, getKey, getNotify, hashCode, notifyListeners, removeChangeListener, removePropertyChangeListener, setDescription, setKey, setNotify

Field Details

data

protected double[][] data
Series matrix values

Constructor Details

MatrixSeries

public MatrixSeries(String name,
                    int rows,
                    int columns)
Constructs a new matrix series.

By default, all matrix items are initialzed to 0.

Parameters:
name - series name (null not permitted).
rows - the number of rows.
columns - the number of columns.

Method Details

equals

public boolean equals(Object obj)
Tests this object instance for equality with an arbitrary object.
Overrides:
equals in interface Series
Parameters:
obj - the object (null permitted).
Returns:
A boolean.

get

public double get(int i,
                  int j)
Returns the value of the specified item in this matrix series.
Parameters:
i - the row of the item.
j - the column of the item.
Returns:
The value of the specified item in this matrix series.
See Also:
getItem(int), update(int,int,double)

getColumnsCount

public int getColumnsCount()
Returns the number of columns in this matrix series.
Returns:
The number of columns in this matrix series.

getItem

public Number getItem(int itemIndex)
Return the matrix item at the specified index. Note that this method creates a new Double instance every time it is called.
Parameters:
itemIndex - item index.
Returns:
The matrix item at the specified index.
See Also:
get(int,int)

getItemColumn

public int getItemColumn(int itemIndex)
Returns the column of the specified item.
Parameters:
itemIndex - the index of the item.
Returns:
The column of the specified item.

getItemCount

public int getItemCount()
Returns the number of items in the series.
Returns:
The item count.

getItemRow

public int getItemRow(int itemIndex)
Returns the row of the specified item.
Parameters:
itemIndex - the index of the item.
Returns:
The row of the specified item.

getRowCount

public int getRowCount()
Returns the number of rows in this matrix series.
Returns:
The number of rows in this matrix series.

update

public void update(int i,
                   int j,
                   double mij)
Updates the value of the specified item in this matrix series.
Parameters:
i - the row of the item.
j - the column of the item.
mij - the new value for the item.
See Also:
get(int,int)

zeroAll

public void zeroAll()
Sets all matrix values to zero and sends a SeriesChangeEvent to all registered listeners.

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