org.apache.commons.math3.transform
Enum DctNormalization

java.lang.Object
  extended by java.lang.Enum<DctNormalization>
      extended by org.apache.commons.math3.transform.DctNormalization
All Implemented Interfaces:
Serializable, Comparable<DctNormalization>

public enum DctNormalization
extends Enum<DctNormalization>

This enumeration defines the various types of normalizations that can be applied to discrete cosine transforms (DCT). The exact definition of these normalizations is detailed below.

Since:
3.0
Version:
$Id: DctNormalization.java 1385310 2012-09-16 16:32:10Z tn $
See Also:
FastCosineTransformer

Enum Constant Summary
ORTHOGONAL_DCT_I
          Should be passed to the constructor of FastCosineTransformer to use the orthogonal normalization convention.
STANDARD_DCT_I
          Should be passed to the constructor of FastCosineTransformer to use the standard normalization convention.
 
Method Summary
static DctNormalization valueOf(String name)
          Returns the enum constant of this type with the specified name.
static DctNormalization[] values()
          Returns an array containing the constants of this enum type, in the order they are declared.
 
Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Enum Constant Detail

STANDARD_DCT_I

public static final DctNormalization STANDARD_DCT_I
Should be passed to the constructor of FastCosineTransformer to use the standard normalization convention. The standard DCT-I normalization convention is defined as follows where N is the size of the data sample.


ORTHOGONAL_DCT_I

public static final DctNormalization ORTHOGONAL_DCT_I
Should be passed to the constructor of FastCosineTransformer to use the orthogonal normalization convention. The orthogonal DCT-I normalization convention is defined as follows which makes the transform orthogonal. N is the size of the data sample.

Method Detail

values

public static DctNormalization[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
for (DctNormalization c : DctNormalization.values())
    System.out.println(c);

Returns:
an array containing the constants of this enum type, in the order they are declared

valueOf

public static DctNormalization valueOf(String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:
name - the name of the enum constant to be returned.
Returns:
the enum constant with the specified name
Throws:
IllegalArgumentException - if this enum type has no constant with the specified name
NullPointerException - if the argument is null


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