Package adams.data.instance

Class InstanceUtils

java.lang.Object

adams.data.container.DataContainerUtils

adams.data.instance.InstanceUtils

public class InstanceUtils
extends DataContainerUtils

Utility class for instances.

Version:

$Revision$

Author:

fracpete (fracpete at waikato dot ac dot nz)

Nested Class Summary

Nested classes/interfaces inherited from class adams.data.container.DataContainerUtils

DataContainerUtils.GapFilling

Field Summary

Fields

Modifier and Type	Field	Description
protected static InstancePointComparator	m_Comparator	comparator for finding X values.

Constructor Summary

Constructors

Constructor	Description
InstanceUtils()

Method Summary

Modifier and Type	Method	Description
static int	findClosestX(List<InstancePoint> points, int x)	Returns the index in m_Points closest to the given x value.
static int[]	findEnclosingXs(List<InstancePoint> points, int x)	Returns the indices of points in m_Points that enclose the given x value.
static int	findX(List<InstancePoint> points, int x)	Returns the index in m_Points of the given x value.
static int	findX(List<InstancePoint> points, InstancePoint p)	Returns the index in m_Points of the given sequence point.
static InstancePointComparator	getComparator()	Returns the comparator used for finding X values.
static double[]	toDoubleArray(Instance c)	Returns the points as double array.
static double[]	toDoubleArray(List<InstancePoint> data)	Returns the points as double array.

Methods inherited from class java.lang.Object

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

Field Detail

m_Comparator

protected static InstancePointComparator m_Comparator

comparator for finding X values.

Constructor Detail

InstanceUtils

public InstanceUtils()

Method Detail

getComparator

public static InstancePointComparator getComparator()

Returns the comparator used for finding X values.

Returns:

the comparator

findX

public static int findX(List<InstancePoint> points,
                        InstancePoint p)

Returns the index in m_Points of the given sequence point.

Parameters:

points - the data to process

p - the point to get the index for

Returns:

the index

findX

public static int findX(List<InstancePoint> points,
                        int x)

Returns the index in m_Points of the given x value.

Parameters:

points - the data to process

x - the x value to get the index for

Returns:

the index

findClosestX

public static int findClosestX(List<InstancePoint> points,
                               int x)

Returns the index in m_Points closest to the given x value.

Parameters:

points - the data to process

x - the x value to get the closest index for

Returns:

the index

findEnclosingXs

public static int[] findEnclosingXs(List<InstancePoint> points,
                                    int x)

Returns the indices of points in m_Points that enclose the given x value. If the given x value happens to be an exact point, then this points will be stored at index 0. If no index could be determined, then -1 will be stored.

Parameters:

points - the data to process

x - the x value to get the enclosing indices for

Returns:

the indices

toDoubleArray

public static double[] toDoubleArray(Instance c)

Returns the points as double array.

Parameters:

c - the instance to turn into a double array

Returns:

the points as double array

toDoubleArray

public static double[] toDoubleArray(List<InstancePoint> data)

Returns the points as double array.

Parameters:

data - the instance points to turn into a double array

Returns:

the points as double array