Package adams.data.padding

Class PaddingHelper

java.lang.Object

adams.data.padding.PaddingHelper

public class PaddingHelper
extends Object

Helper for padding operations.

Version:

$Revision$

Author:

fracpete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor	Description
PaddingHelper()

Method Summary

Modifier and Type	Method	Description
static int	nextPowerOf2(int n)	Returns the next bigger number that's a power of 2.
static double[]	pad(double[] data, int numPoints, PaddingType type)	Pads the data to the specified number of data points (pads on the right).
static double[]	pad(double[] data, int numPoints, PaddingType type, boolean padLeft)	Pads the data to the specified number of data points.
static float[]	pad(float[] data, int numPoints, PaddingType type)	Pads the data to the specified number of data points (pads on the right).
static float[]	pad(float[] data, int numPoints, PaddingType type, boolean padLeft)	Pads the data to the specified number of data points.
static double[]	padPow2(double[] data, PaddingType type)	Pads the data to the next power of 2.
static double[]	padPow2(double[] data, PaddingType type, boolean padLeft)	Pads the data to the next power of 2.
static float[]	padPow2(float[] data, PaddingType type)	Pads the data to the next power of 2 (pads on the right).
static float[]	padPow2(float[] data, PaddingType type, boolean padLeft)	Pads the data to the next power of 2.

Methods inherited from class java.lang.Object

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

Constructor Detail

PaddingHelper

public PaddingHelper()

Method Detail

nextPowerOf2

public static int nextPowerOf2(int n)

Returns the next bigger number that's a power of 2. If the number is already a power of 2 then this will be returned. The number will be at least 2^2.

Parameters:

n - the number to start from

Returns:

the next bigger number

padPow2

public static float[] padPow2(float[] data,
                              PaddingType type)

Pads the data to the next power of 2 (pads on the right).

Parameters:

data - the data to pad

type - what values to pad

Returns:

the padded data

padPow2

public static float[] padPow2(float[] data,
                              PaddingType type,
                              boolean padLeft)

Pads the data to the next power of 2.

Parameters:

data - the data to pad

type - what values to pad

padLeft - whether to pad on the left rather than right

Returns:

the padded data

pad

public static float[] pad(float[] data,
                          int numPoints,
                          PaddingType type)

Pads the data to the specified number of data points (pads on the right).

Parameters:

data - the data to pad

numPoints - the number of data points for the result

type - what values to pad

Returns:

the padded data

pad

public static float[] pad(float[] data,
                          int numPoints,
                          PaddingType type,
                          boolean padLeft)

Pads the data to the specified number of data points.

Parameters:

data - the data to pad

numPoints - the number of data points for the result

type - what values to pad

padLeft - whether to pad on the left rather than right

Returns:

the padded data

padPow2

public static double[] padPow2(double[] data,
                               PaddingType type)

Pads the data to the next power of 2.

Parameters:

data - the data to pad

type - what values to pad

Returns:

the padded data

padPow2

public static double[] padPow2(double[] data,
                               PaddingType type,
                               boolean padLeft)

Pads the data to the next power of 2.

Parameters:

data - the data to pad

type - what values to pad

padLeft - whether to pad on the left rather than right

Returns:

the padded data

pad

public static double[] pad(double[] data,
                           int numPoints,
                           PaddingType type)

Pads the data to the specified number of data points (pads on the right).

Parameters:

data - the data to pad

numPoints - the number of data points for the result

type - what values to pad

Returns:

the padded data

pad

public static double[] pad(double[] data,
                           int numPoints,
                           PaddingType type,
                           boolean padLeft)

Pads the data to the specified number of data points.

Parameters:

data - the data to pad

numPoints - the number of data points for the result

type - what values to pad

padLeft - whether to pad on the left rather than right

Returns:

the padded data