Package de.gsi.dataset.spi.utils

Class MultiArrayDouble

java.lang.Object

de.gsi.dataset.spi.utils.MultiArray<double[]>

de.gsi.dataset.spi.utils.MultiArrayDouble

Direct Known Subclasses:

MultiArrayDouble.MultiArray1DDouble, MultiArrayDouble.MultiArray2DDouble

public class MultiArrayDouble
extends MultiArray<double[]>

Implementation of MultiArray for double values. Also contains subtypes for 1D and 2D Arrays which allow more convenient and more efficient access.

The data is stored in row-major in a flat double array.

Author:

Alexander Krimm

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MultiArrayDouble.MultiArray1DDouble	Specialisation for the 1D case to allow for easier and more efficient usage
static class	MultiArrayDouble.MultiArray2DDouble	Specialisation for the 2D case to allow for easier and more efficient usage

Field Summary

Fields inherited from class de.gsi.dataset.spi.utils.MultiArray

dimensions, elements, offset, strides

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MultiArrayDouble(double[] elements, int[] dimensions, int offset)

Method Summary

Modifier and Type	Method	Description
static MultiArrayDouble	allocate(int[] dimensions)
boolean	equals(java.lang.Object o)
double	get(int[] indices)	Get a value in the MultiArray.
double	getStrided(int index)	Get a value in the backing array using linear indexing.
int	hashCode()
void	set(int[] indices, double value)	Set a value in the MultiArray for given indices
void	setStrided(int index, double value)	Set a value in the backing array using linear indexing.
static MultiArrayDouble	wrap(double[] elements)
static MultiArrayDouble	wrap(double[] elements, int[] dimensions)
static MultiArrayDouble	wrap(double[] elements, int offset, int length)
static MultiArrayDouble	wrap(double[] elements, int offset, int[] dimensions)

Methods inherited from class de.gsi.dataset.spi.utils.MultiArray

elements, getDimensions, getElementsCount, getIndex, getIndices, getOffset, toString, wrap, wrap, wrap, wrap

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MultiArrayDouble

protected MultiArrayDouble(double[] elements,
                           int[] dimensions,
                           int offset)

Method Detail

wrap

public static MultiArrayDouble wrap(double[] elements)

Parameters:

elements - Elements for the new MultiArray

Returns:

A MultiArrayDouble1D with the supplied elements

wrap

public static MultiArrayDouble wrap(double[] elements,
                                    int offset,
                                    int length)

Parameters:

elements - Elements for the new MultiArray

offset - where in the backing array the element data starts

length - number of elements to use from the elements array

Returns:

A MultiArrayDouble1D with the supplied elements

wrap

public static MultiArrayDouble wrap(double[] elements,
                                    int[] dimensions)

Parameters:

dimensions - The size of the new MultiArrayDouble

elements - The element data of the MultiArrayDouble in row-major storage

Returns:

A MultiArrayDouble or specialisation of it for the 1D and 2D case

wrap

public static MultiArrayDouble wrap(double[] elements,
                                    int offset,
                                    int[] dimensions)

Parameters:

elements - The element data of the MultiArrayDouble in row-major storage

offset - where in the backing array the element data starts

dimensions - The size of the new MultiArrayDouble

Returns:

A MultiArrayDouble or specialisation of it for the 1D and 2D case

allocate

public static MultiArrayDouble allocate(int[] dimensions)

Parameters:

dimensions - Dimensions for the new MultiArray

Returns:

A new MultiArrayDouble with a new empty backing array

setStrided

public void setStrided(int index,
                       double value)

Set a value in the backing array using linear indexing.

Parameters:

value - the new value for the element

index - the index of the element to set

set

public void set(int[] indices,
                double value)

Set a value in the MultiArray for given indices

Parameters:

value - The new value for the element

indices - Indices for every dimension of the MultiArray

getStrided

public double getStrided(int index)

Get a value in the backing array using linear indexing.

Parameters:

index - the index of the element to set

Returns:

The element value

get

public double get(int[] indices)

Get a value in the MultiArray.

Parameters:

indices - the indices of the element to set

Returns:

The element value

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object