DoubleNdArray (TensorFlow NdArray Library 0.2.0 API)

All Superinterfaces:

NdArray<Double>

All Known Implementing Classes:

DoubleDenseNdArray
```
public interface DoubleNdArray
extends NdArray<Double>
```
An NdArray of doubles.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`DoubleNdArray`	`copyTo(NdArray<Double> dst)` Copy the content of this array to the destination array.
`NdArraySequence<DoubleNdArray>`	`elements(int dimensionIdx)` Returns a sequence of all elements at a given dimension.
`DoubleNdArray`	`get(long... coordinates)` Returns the N-dimensional element of this array at the given coordinates.
`double`	`getDouble(long... coordinates)` Returns the double value of the scalar found at the given coordinates.
`default Double`	`getObject(long... coordinates)` Returns the value of the scalar found at the given coordinates.
`DoubleNdArray`	`read(DataBuffer<Double> dst)` Read the content of this N-dimensional array into the destination buffer.
`DoubleNdArray`	`read(DoubleDataBuffer dst)`
`NdArraySequence<DoubleNdArray>`	`scalars()` Returns a sequence of all scalars in this array.
`DoubleNdArray`	`set(NdArray<Double> src, long... coordinates)` Assigns the value of the N-dimensional element found at the given coordinates.
`DoubleNdArray`	`setDouble(double value, long... coordinates)` Assigns the double value of the scalar found at the given coordinates.
`default DoubleNdArray`	`setObject(Double value, long... coordinates)` Assigns the value of the scalar found at the given coordinates.
`DoubleNdArray`	`slice(Index... indices)` Creates a multi-dimensional view (or slice) of this array by mapping one or more dimensions to the given index selectors.
`DoubleNdArray`	`write(DataBuffer<Double> src)` Write the content of this N-dimensional array from the source buffer.
`DoubleNdArray`	`write(DoubleDataBuffer src)`

Methods inherited from interface org.tensorflow.ndarray.NdArray
equals, rank, shape, size

- Method Detail
  - getDouble
```
double getDouble(long... coordinates)
```
    Returns the double value of the scalar found at the given coordinates.
    To access the scalar element, the number of coordinates provided must be equal to the number of dimensions of this array (i.e. its rank). For example:
```
  DoubleNdArray matrix = NdArrays.ofDoubles(shape(2, 2));  // matrix rank = 2
  matrix.getDouble(0, 1);  // succeeds, returns 0.0
  matrix.getDouble(0);  // throws IllegalRankException

  DoubleNdArray scalar = matrix.get(0, 1);  // scalar rank = 0
  scalar.getDouble();  // succeeds, returns 0.0
 
```
    Parameters:
    
    coordinates - coordinates of the scalar to resolve
    
    Returns:
    
    value of that scalar
    
    Throws:
    
    IndexOutOfBoundsException - if some coordinates are outside the limits of their respective dimension
    
    IllegalRankException - if number of coordinates is not sufficient to access a scalar element
  - setDouble
```
DoubleNdArray setDouble(double value,
                        long... coordinates)
```
    Assigns the double value of the scalar found at the given coordinates.
    To access the scalar element, the number of coordinates provided must be equal to the number of dimensions of this array (i.e. its rank). For example:
```
  DoubleNdArray matrix = NdArrays.ofDoubles(shape(2, 2));  // matrix rank = 2
  matrix.setDouble(10.0, 0, 1);  // succeeds
  matrix.setDouble(10.0, 0);  // throws IllegalRankException

  DoubleNdArray scalar = matrix.get(0, 1);  // scalar rank = 0
  scalar.setDouble(10.0);  // succeeds
 
```
    Parameters:
    
    value - value to assign
    
    coordinates - coordinates of the scalar to assign
    
    Returns:
    
    this array
    
    Throws:
    
    IndexOutOfBoundsException - if some coordinates are outside the limits of their respective dimension
    
    IllegalRankException - if number of coordinates is not sufficient to access a scalar element
  - slice
```
DoubleNdArray slice(Index... indices)
```
    Description copied from interface: NdArray
    Creates a multi-dimensional view (or slice) of this array by mapping one or more dimensions to the given index selectors.
    Slices allow to traverse an N-dimensional array in any of its axis and/or to filter only elements of interest. For example, for a given matrix on the [x, y] axes, it is possible to iterate elements at y=0 for all x.
    Any changes applied to the returned slice affect the data of this array as well, as there is no copy involved.
    Example of usage:
```
    FloatNdArray matrix3d = NdArrays.ofFloats(shape(3, 2, 4));  // with [x, y, z] axes

    // Iterates elements on the x axis by preserving only the 3rd value on the z axis,
    // (i.e. [x, y, 2])
    matrix3d.slice(all(), all(), at(2)).elements(0).forEach(m -> {
      assertEquals(shape(2), m); // y=2, z=0 (scalar)
    });

    // Creates a slice that contains only the last element of the y axis and elements with an
    // odd `z` coordinate.
    FloatNdArray slice = matrix3d.slice(all(), at(1), odd());
    assertEquals(shape(3, 2), slice.shape());  // x=3, y=0 (scalar), z=2 (odd coordinates)

    // Iterates backward the elements on the x axis
    matrix3d.slice(flip()).elements(0).forEach(m -> {
      assertEquals(shape(2, 4), m);  // y=2, z=4
    });
 
```
    Specified by:
    
    slice in interface NdArray<Double>
    
    Parameters:
    
    indices - index selectors per dimensions, starting from dimension 0 of this array.
    
    Returns:
    
    the element resulting of the index selection
  - get
```
DoubleNdArray get(long... coordinates)
```
    Description copied from interface: NdArray
    
    Returns the N-dimensional element of this array at the given coordinates.
    Elements of any of the dimensions of this array can be retrieved. For example, if the number of coordinates is equal to the number of dimensions of this array, then a rank-0 (scalar) array is returned, which value can then be obtained by calling `array.getObject()`.
    Any changes applied to the returned elements affect the data of this array as well, as there is no copy involved.
    Note that invoking this method is an equivalent and more efficient way to slice this array on single scalar, i.e. array.get(x, y, z) is equal to array.slice(at(x), at(y), at(z))
    
    Specified by:
    
    get in interface NdArray<Double>
    
    Parameters:
    
    coordinates - coordinates of the element to access, none will return this array
    
    Returns:
    
    the element at this index
  - set
```
DoubleNdArray set(NdArray<Double> src,
                  long... coordinates)
```
    Description copied from interface: NdArray
    Assigns the value of the N-dimensional element found at the given coordinates.
    The number of coordinates provided can be anywhere between 0 and rank - 1. For example:
```
  FloatNdArray matrix = NdArrays.ofFloats(shape(2, 2));  // matrix rank = 2
  matrix.set(vector(10.0f, 20.0f), 0);  // success
  matrix.set(scalar(10.0f), 1, 0); // success
 
```
    Specified by:
    
    set in interface NdArray<Double>
    
    Parameters:
    
    src - an array of the values to assign
    
    coordinates - coordinates of the element to assign
    
    Returns:
    
    this array
  - getObject
```
default Double getObject(long... coordinates)
```
    Description copied from interface: NdArray
    Returns the value of the scalar found at the given coordinates.
    To access the scalar element, the number of coordinates provided must be equal to the number of dimensions of this array (i.e. its rank). For example:
```
  FloatNdArray matrix = NdArrays.ofFloats(shape(2, 2));  // matrix rank = 2
  matrix.getObject(0, 1);  // succeeds, returns 0.0f
  matrix.getObject(0);  // throws IllegalRankException

  FloatNdArray scalar = matrix.get(0, 1);  // scalar rank = 0
  scalar.getObject();  // succeeds, returns 0.0f
 
```
    Note: if this array stores values of a primitive type, prefer the usage of the specialized method in the subclass for that type. For example, floatArray.getFloat(0); .
    Specified by:
    
    getObject in interface NdArray<Double>
    
    Parameters:
    
    coordinates - coordinates of the scalar to resolve
    
    Returns:
    
    value of that scalar
  - setObject
```
default DoubleNdArray setObject(Double value,
                                long... coordinates)
```
    Description copied from interface: NdArray
    Assigns the value of the scalar found at the given coordinates.
    To access the scalar element, the number of coordinates provided must be equal to the number of dimensions of this array (i.e. its rank). For example:
```
  FloatNdArray matrix = NdArrays.ofFloats(shape(2, 2));  // matrix rank = 2
  matrix.setObject(10.0f, 0, 1);  // succeeds
  matrix.setObject(10.0f, 0);  // throws IllegalRankException

  FloatNdArray scalar = matrix.get(0, 1);  // scalar rank = 0
  scalar.setObject(10.0f);  // succeeds
 
```
    Note: if this array stores values of a primitive type, prefer the usage of the specialized method in the subclass for that type. For example, floatArray.setFloat(10.0f, 0);
    Specified by:
    
    setObject in interface NdArray<Double>
    
    Parameters:
    
    value - the value to assign
    
    coordinates - coordinates of the scalar to assign
    
    Returns:
    
    this array
  - elements
```
NdArraySequence<DoubleNdArray> elements(int dimensionIdx)
```
    Description copied from interface: NdArray
    Returns a sequence of all elements at a given dimension.
    Logically, the N-dimensional array can be flatten in a single vector, where the scalars of the (n - 1)th element precedes those of the (n)th element, for a total of NdArray.size() values.
    For example, given a n x m matrix on the [x, y] axes, elements are iterated in the following order:
    x₀y₀, x₀y₁, ..., x₀y_m-1, x₁y₀, x₁y₁, ..., x_n-1y_m-1
    The returned sequence can then be iterated to visit each elements, either by calling Iterable.forEach(Consumer) or NdArraySequence.forEachIndexed(BiConsumer).
```
    // Iterate matrix for initializing each of its vectors
    matrixOfFloats.elements(0).forEach(v -> {
      v.set(vector(1.0f, 2.0f, 3.0f));
    });

    // Iterate a vector for reading each of its scalar
    vectorOfFloats.scalars().forEachIdx((coords, s) -> {
      System.out.println("Value " + s.getFloat() + " found at " + coords);
    });
 
```
    Specified by:
    
    elements in interface NdArray<Double>
    
    Parameters:
    
    dimensionIdx - index of the dimension
    
    Returns:
    
    an NdArray sequence
  - scalars
```
NdArraySequence<DoubleNdArray> scalars()
```
    Description copied from interface: NdArray
    
    Returns a sequence of all scalars in this array.
    This is equivalent to call elements(shape().numDimensions() - 1)
    
    Specified by:
    
    scalars in interface NdArray<Double>
    
    Returns:
    
    an NdArray sequence
  - copyTo
```
DoubleNdArray copyTo(NdArray<Double> dst)
```
    Description copied from interface: NdArray
    
    Copy the content of this array to the destination array.
    The NdArray.shape() of the destination array must be equal to the shape of this array, or an exception is thrown. After the copy, the content of both arrays can be altered independently, without affecting each other.
    
    Specified by:
    
    copyTo in interface NdArray<Double>
    
    Parameters:
    
    dst - array to receive a copy of the content of this array
    
    Returns:
    
    this array
  - read
```
DoubleNdArray read(DataBuffer<Double> dst)
```
    Description copied from interface: NdArray
    
    Read the content of this N-dimensional array into the destination buffer.
    The size of the buffer must be equal or greater to the NdArray.size() of this array, or an exception is thrown. After the copy, content of the buffer and of the array can be altered independently, without affecting each other.
    
    Specified by:
    
    read in interface NdArray<Double>
    
    Parameters:
    
    dst - the destination buffer
    
    Returns:
    
    this array
    
    See Also:
    
    DataBuffer.size()
  - read
```
DoubleNdArray read(DoubleDataBuffer dst)
```
  - write
```
DoubleNdArray write(DataBuffer<Double> src)
```
    Description copied from interface: NdArray
    
    Write the content of this N-dimensional array from the source buffer.
    The size of the buffer must be equal or greater to the NdArray.size() of this array, or an exception is thrown. After the copy, content of the buffer and of the array can be altered independently, without affecting each other.
    
    Specified by:
    
    write in interface NdArray<Double>
    
    Parameters:
    
    src - the source buffer
    
    Returns:
    
    this array
    
    See Also:
    
    DataBuffer.size()
  - write
```
DoubleNdArray write(DoubleDataBuffer src)
```

Interface DoubleNdArray

Method Summary

Methods inherited from interface org.tensorflow.ndarray.NdArray

Method Detail

getDouble

setDouble

slice

get

set

getObject

setObject

elements

scalars

copyTo

read

read

write

write