Package elki.data

Class OneDimensionalDoubleVector

java.lang.Object

elki.data.OneDimensionalDoubleVector

All Implemented Interfaces:

FeatureVector<java.lang.Number>, NumberVector, SpatialComparable

public class OneDimensionalDoubleVector
extends java.lang.Object
implements NumberVector

Specialized class implementing a one-dimensional double vector without using an array. Saves a little bit of memory, albeit we cannot avoid boxing as long as we want to implement the interface.

Since:

0.4.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	OneDimensionalDoubleVector.Factory	Factory class.

Field Summary

Fields

Modifier and Type	Field	Description
static OneDimensionalDoubleVector.Factory	STATIC	Static factory instance.
(package private) double	val	The actual data value.

Fields inherited from interface elki.data.FeatureVector

TYPE

Fields inherited from interface elki.data.NumberVector

ATTRIBUTE_SEPARATOR, FIELD, FIELD_1D, FIELD_2D, VARIABLE_LENGTH

Constructor Summary

Constructors

Constructor	Description
OneDimensionalDoubleVector(double val)	Constructor.

Method Summary

Modifier and Type	Method	Description
double	doubleValue(int dimension)	Returns the value in the specified dimension as double.
int	getDimensionality()	The dimensionality of the vector space where of this FeatureVector of V is an element.
long	longValue(int dimension)	Returns the value in the specified dimension as long.
double[]	toArray()	Returns a double array copy of this vector.

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.data.FeatureVector

toString

Methods inherited from interface elki.data.NumberVector

byteValue, floatValue, getMax, getMin, getValue, intValue, shortValue

Field Detail

STATIC

public static final OneDimensionalDoubleVector.Factory STATIC

Static factory instance.

val

double val

The actual data value.

Constructor Detail

OneDimensionalDoubleVector

public OneDimensionalDoubleVector(double val)

Constructor.

Parameters:

val - Value

Method Detail

getDimensionality

public int getDimensionality()

Description copied from interface: FeatureVector

The dimensionality of the vector space where of this FeatureVector of V is an element.

Specified by:

getDimensionality in interface FeatureVector<java.lang.Number>

Specified by:

getDimensionality in interface SpatialComparable

Returns:

the number of dimensions of this FeatureVector of V

doubleValue

public double doubleValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as double.

Note: this might seem redundant with respect to getValue(dim).doubleValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

doubleValue in interface NumberVector

Parameters:

dimension - the desired dimension, where 0 ≤ dimension < this.getDimensionality()

Returns:

the value in the specified dimension

longValue

public long longValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as long.

Note: this might seem redundant with respect to getValue(dim).longValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

longValue in interface NumberVector

Parameters:

dimension - the desired dimension, where 0 ≤ dimension < this.getDimensionality()

Returns:

the value in the specified dimension

toArray

public double[] toArray()

Description copied from interface: NumberVector

Returns a double array copy of this vector.

Specified by:

toArray in interface NumberVector

Returns:

Copy as double[]