net.sourceforge.jiu.color.data
Class MemoryCoOccurrenceFrequencyMatrix

java.lang.Object
  net.sourceforge.jiu.color.data.BaseCoOccurrenceFrequencyMatrix
      net.sourceforge.jiu.color.data.MemoryCoOccurrenceFrequencyMatrix

All Implemented Interfaces:

CoOccurrenceFrequencyMatrix

public class MemoryCoOccurrenceFrequencyMatrix

extends BaseCoOccurrenceFrequencyMatrix

Implements the CoOccurrenceFrequencyMatrix interface by using a large array of values in memory.

Author:

Marco Schmidt

Constructor Summary

MemoryCoOccurrenceFrequencyMatrix(int dimension)
Creates a co-occurrence frequency matrix of given dimension; allocates dimension times dimension double values for internal array; does not call clear() to set everything to zero, must be done by user (or automatically in init).

Method Summary

void	clear() Sets all values of this matrix to zero.
int	getDimension() Returns the dimension of this matrix.
double	getValue(int i) Returns the value of this matrix at row i, column i.
double	getValue(int i, int j) Returns the value of this matrix at row j, column i.
void	setValue(int i, int j, double newValue) Sets value at row j, column i to newValue.

Methods inherited from class net.sourceforge.jiu.color.data.BaseCoOccurrenceFrequencyMatrix

computeStatistics, getMean, getScofMean, getScofStddev, getScofSum, getStddev

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MemoryCoOccurrenceFrequencyMatrix

public MemoryCoOccurrenceFrequencyMatrix(int dimension)

Creates a co-occurrence frequency matrix of given dimension; allocates dimension times dimension double values for internal array; does not call clear() to set everything to zero, must be done by user (or automatically in init). Dimension should be number of colors in palette.

Throws:

IllegalArgumentException - if dimension is smaller than 1

Method Detail

clear

public void clear()

Sets all values of this matrix to zero.

getDimension

public int getDimension()

Description copied from interface: CoOccurrenceFrequencyMatrix

Returns the dimension of this matrix.

getValue

public double getValue(int i)
                throws IllegalArgumentException

Returns the value of this matrix at row i, column i. Argument is zero-based, so make sure that 0 <= i < getDimension(). Other values will raise an IllegalArgumentException. Simply calls getValue(i, i).

Parameters:

i - index into the matrix, must be larger than or equal to 0 and smaller than CoOccurrenceFrequencyMatrix.getDimension()

Throws:

IllegalArgumentException

getValue

public double getValue(int i,
                       int j)
                throws IllegalArgumentException

Returns the value of this matrix at row j, column i. Both arguments are zero-based, so make sure that 0 <= i, j < getDimension(). Other values will raise an IllegalArgumentException.

Throws:

IllegalArgumentException

setValue

public void setValue(int i,
                     int j,
                     double newValue)
              throws IllegalArgumentException

Sets value at row j, column i to newValue. Both arguments are zero-based, so make sure that 0 <= i, j < getDimension(). Other values will raise an IllegalArgumentException.

Throws:

IllegalArgumentException