ArrayFieldVector (Apache Commons Math 3.6.1 API)

java.lang.Object
- org.apache.commons.math3.linear.ArrayFieldVector<T>

Type Parameters:
T - the type of the field elements

All Implemented Interfaces:

Serializable, FieldVector<T>
```
public class ArrayFieldVector<T extends FieldElement<T>>
extends Object
implements FieldVector<T>, Serializable
```
This class implements the FieldVector interface with a FieldElement array.

Since:

2.0

See Also:
Serialized Form

Constructor Summary

Constructors
Constructor and Description
`ArrayFieldVector(ArrayFieldVector<T> v)` Construct a vector from another vector, using a deep copy.
`ArrayFieldVector(ArrayFieldVector<T> v1, ArrayFieldVector<T> v2)` Deprecated. as of 3.2, replaced by `ArrayFieldVector(FieldVector, FieldVector)`
`ArrayFieldVector(ArrayFieldVector<T> v, boolean deep)` Construct a vector from another vector.
`ArrayFieldVector(ArrayFieldVector<T> v1, T[] v2)` Deprecated. as of 3.2, replaced by `ArrayFieldVector(FieldVector, FieldElement[])`
`ArrayFieldVector(Field<T> field)` Build a 0-length vector.
`ArrayFieldVector(Field<T> field, int size)` Construct a vector of zeroes.
`ArrayFieldVector(Field<T> field, T[] d)` Construct a vector from an array, copying the input array.
`ArrayFieldVector(Field<T> field, T[] d, boolean copyArray)` Create a new ArrayFieldVector using the input array as the underlying data array.
`ArrayFieldVector(Field<T> field, T[] d, int pos, int size)` Construct a vector from part of a array.
`ArrayFieldVector(Field<T> field, T[] v1, T[] v2)` Construct a vector by appending one vector to another vector.
`ArrayFieldVector(FieldVector<T> v)` Construct a vector from another vector, using a deep copy.
`ArrayFieldVector(FieldVector<T> v1, FieldVector<T> v2)` Construct a vector by appending one vector to another vector.
`ArrayFieldVector(FieldVector<T> v1, T[] v2)` Construct a vector by appending one vector to another vector.
`ArrayFieldVector(int size, T preset)` Construct a vector with preset values.
`ArrayFieldVector(T[] d)` Construct a vector from an array, copying the input array.
`ArrayFieldVector(T[] v1, ArrayFieldVector<T> v2)` Deprecated. as of 3.2, replaced by `ArrayFieldVector(FieldElement[], FieldVector)`
`ArrayFieldVector(T[] d, boolean copyArray)` Create a new ArrayFieldVector using the input array as the underlying data array.
`ArrayFieldVector(T[] v1, FieldVector<T> v2)` Construct a vector by appending one vector to another vector.
`ArrayFieldVector(T[] d, int pos, int size)` Construct a vector from part of a array.
`ArrayFieldVector(T[] v1, T[] v2)` Construct a vector by appending one vector to another vector.

Method Summary

Methods
Modifier and Type	Method and Description
`ArrayFieldVector<T>`	`add(ArrayFieldVector<T> v)` Compute the sum of `this` and `v`.
`FieldVector<T>`	`add(FieldVector<T> v)` Compute the sum of `this` and `v`.
`ArrayFieldVector<T>`	`append(ArrayFieldVector<T> v)` Construct a vector by appending a vector to this vector.
`FieldVector<T>`	`append(FieldVector<T> v)` Construct a vector by appending a vector to this vector.
`FieldVector<T>`	`append(T in)` Construct a vector by appending a T to this vector.
`protected void`	`checkVectorDimensions(FieldVector<T> v)` Check if instance and specified vectors have the same dimension.
`protected void`	`checkVectorDimensions(int n)` Check if instance dimension is equal to some expected value.
`FieldVector<T>`	`copy()` Returns a (deep) copy of this.
`T`	`dotProduct(ArrayFieldVector<T> v)` Compute the dot product.
`T`	`dotProduct(FieldVector<T> v)` Compute the dot product.
`ArrayFieldVector<T>`	`ebeDivide(ArrayFieldVector<T> v)` Element-by-element division.
`FieldVector<T>`	`ebeDivide(FieldVector<T> v)` Element-by-element division.
`ArrayFieldVector<T>`	`ebeMultiply(ArrayFieldVector<T> v)` Element-by-element multiplication.
`FieldVector<T>`	`ebeMultiply(FieldVector<T> v)` Element-by-element multiplication.
`boolean`	`equals(Object other)` Test for the equality of two vectors.
`T[]`	`getData()` Returns vector entries as a T array.
`T[]`	`getDataRef()` Returns a reference to the underlying data array.
`int`	`getDimension()` Returns the size of the vector.
`T`	`getEntry(int index)` Returns the entry in the specified index.
`Field<T>`	`getField()` Get the type of field elements of the vector.
`FieldVector<T>`	`getSubVector(int index, int n)` Get a subvector from consecutive elements.
`int`	`hashCode()` Get a hashCode for the real vector.
`FieldVector<T>`	`mapAdd(T d)` Map an addition operation to each entry.
`FieldVector<T>`	`mapAddToSelf(T d)` Map an addition operation to each entry.
`FieldVector<T>`	`mapDivide(T d)` Map a division operation to each entry.
`FieldVector<T>`	`mapDivideToSelf(T d)` Map a division operation to each entry.
`FieldVector<T>`	`mapInv()` Map the 1/x function to each entry.
`FieldVector<T>`	`mapInvToSelf()` Map the 1/x function to each entry.
`FieldVector<T>`	`mapMultiply(T d)` Map a multiplication operation to each entry.
`FieldVector<T>`	`mapMultiplyToSelf(T d)` Map a multiplication operation to each entry.
`FieldVector<T>`	`mapSubtract(T d)` Map a subtraction operation to each entry.
`FieldVector<T>`	`mapSubtractToSelf(T d)` Map a subtraction operation to each entry.
`FieldMatrix<T>`	`outerProduct(ArrayFieldVector<T> v)` Compute the outer product.
`FieldMatrix<T>`	`outerProduct(FieldVector<T> v)` Compute the outer product.
`ArrayFieldVector<T>`	`projection(ArrayFieldVector<T> v)` Find the orthogonal projection of this vector onto another vector.
`FieldVector<T>`	`projection(FieldVector<T> v)` Find the orthogonal projection of this vector onto another vector.
`void`	`set(int index, ArrayFieldVector<T> v)` Set a set of consecutive elements.
`void`	`set(T value)` Set all elements to a single value.
`void`	`setEntry(int index, T value)` Set a single element.
`void`	`setSubVector(int index, FieldVector<T> v)` Set a set of consecutive elements.
`ArrayFieldVector<T>`	`subtract(ArrayFieldVector<T> v)` Compute `this` minus `v`.
`FieldVector<T>`	`subtract(FieldVector<T> v)` Compute `this` minus `v`.
`T[]`	`toArray()` Convert the vector to a T array.
`T`	`walkInDefaultOrder(FieldVectorChangingVisitor<T> visitor)` Visits (and possibly alters) all entries of this vector in default order (increasing index).
`T`	`walkInDefaultOrder(FieldVectorChangingVisitor<T> visitor, int start, int end)` Visits (and possibly alters) some entries of this vector in default order (increasing index).
`T`	`walkInDefaultOrder(FieldVectorPreservingVisitor<T> visitor)` Visits (but does not alter) all entries of this vector in default order (increasing index).
`T`	`walkInDefaultOrder(FieldVectorPreservingVisitor<T> visitor, int start, int end)` Visits (but does not alter) some entries of this vector in default order (increasing index).
`T`	`walkInOptimizedOrder(FieldVectorChangingVisitor<T> visitor)` Visits (and possibly alters) all entries of this vector in optimized order.
`T`	`walkInOptimizedOrder(FieldVectorChangingVisitor<T> visitor, int start, int end)` Visits (and possibly change) some entries of this vector in optimized order.
`T`	`walkInOptimizedOrder(FieldVectorPreservingVisitor<T> visitor)` Visits (but does not alter) all entries of this vector in optimized order.
`T`	`walkInOptimizedOrder(FieldVectorPreservingVisitor<T> visitor, int start, int end)` Visits (but does not alter) some entries of this vector in optimized order.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ArrayFieldVector
```
public ArrayFieldVector(Field<T> field)
```
    Build a 0-length vector. Zero-length vectors may be used to initialize construction of vectors by data gathering. We start with zero-length and use either the ArrayFieldVector(ArrayFieldVector, ArrayFieldVector) constructor or one of the append methods (add(FieldVector) or append(ArrayFieldVector)) to gather data into this vector.
    
    Parameters:
    field - field to which the elements belong
  - ArrayFieldVector
```
public ArrayFieldVector(Field<T> field,
                int size)
```
    Construct a vector of zeroes.
    
    Parameters:
    field - Field to which the elements belong.
    size - Size of the vector.
  - ArrayFieldVector
```
public ArrayFieldVector(int size,
                T preset)
```
    Construct a vector with preset values.
    
    Parameters:
    size - Size of the vector.
    preset - All entries will be set with this value.
  - ArrayFieldVector
```
public ArrayFieldVector(T[] d)
                 throws NullArgumentException,
                        ZeroException
```
    Construct a vector from an array, copying the input array. This constructor needs a non-empty d array to retrieve the field from its first element. This implies it cannot build 0 length vectors. To build vectors from any size, one should use the ArrayFieldVector(Field, FieldElement[]) constructor.
    
    Parameters:
    d - Array.
    
    Throws:
    
    NullArgumentException - if d is null.
    
    ZeroException - if d is empty.
    See Also:
    ArrayFieldVector(Field, FieldElement[])
  - ArrayFieldVector
```
public ArrayFieldVector(Field<T> field,
                T[] d)
                 throws NullArgumentException
```
    Construct a vector from an array, copying the input array.
    
    Parameters:
    field - Field to which the elements belong.
    d - Array.
    
    Throws:
    
    NullArgumentException - if d is null.
    See Also:
    ArrayFieldVector(FieldElement[])
  - ArrayFieldVector
```
public ArrayFieldVector(T[] d,
                boolean copyArray)
                 throws NullArgumentException,
                        ZeroException
```
    Create a new ArrayFieldVector using the input array as the underlying data array. If an array is built specially in order to be embedded in a ArrayFieldVector and not used directly, the copyArray may be set to false. This will prevent the copying and improve performance as no new array will be built and no data will be copied. This constructor needs a non-empty d array to retrieve the field from its first element. This implies it cannot build 0 length vectors. To build vectors from any size, one should use the ArrayFieldVector(Field, FieldElement[], boolean) constructor.
    
    Parameters:
    d - Data for the new vector.
    copyArray - If true, the input array will be copied, otherwise it will be referenced.
    
    Throws:
    
    NullArgumentException - if d is null.
    
    ZeroException - if d is empty.
    See Also:
    ArrayFieldVector(FieldElement[]), ArrayFieldVector(Field, FieldElement[], boolean)
  - ArrayFieldVector
```
public ArrayFieldVector(Field<T> field,
                T[] d,
                boolean copyArray)
                 throws NullArgumentException
```
    Create a new ArrayFieldVector using the input array as the underlying data array. If an array is built specially in order to be embedded in a ArrayFieldVector and not used directly, the copyArray may be set to false. This will prevent the copying and improve performance as no new array will be built and no data will be copied.
    
    Parameters:
    field - Field to which the elements belong.
    d - Data for the new vector.
    copyArray - If true, the input array will be copied, otherwise it will be referenced.
    
    Throws:
    
    NullArgumentException - if d is null.
    See Also:
    ArrayFieldVector(FieldElement[], boolean)
  - ArrayFieldVector
```
public ArrayFieldVector(T[] d,
                int pos,
                int size)
                 throws NullArgumentException,
                        NumberIsTooLargeException
```
    Construct a vector from part of a array.
    
    Parameters:
    d - Array.
    pos - Position of the first entry.
    size - Number of entries to copy.
    
    Throws:
    
    NullArgumentException - if d is null.
    
    NumberIsTooLargeException - if the size of d is less than pos + size.
  - ArrayFieldVector
```
public ArrayFieldVector(Field<T> field,
                T[] d,
                int pos,
                int size)
                 throws NullArgumentException,
                        NumberIsTooLargeException
```
    Construct a vector from part of a array.
    
    Parameters:
    field - Field to which the elements belong.
    d - Array.
    pos - Position of the first entry.
    size - Number of entries to copy.
    
    Throws:
    
    NullArgumentException - if d is null.
    
    NumberIsTooLargeException - if the size of d is less than pos + size.
  - ArrayFieldVector
```
public ArrayFieldVector(FieldVector<T> v)
                 throws NullArgumentException
```
    Construct a vector from another vector, using a deep copy.
    
    Parameters:
    v - Vector to copy.
    
    Throws:
    
    NullArgumentException - if v is null.
  - ArrayFieldVector
```
public ArrayFieldVector(ArrayFieldVector<T> v)
                 throws NullArgumentException
```
    Construct a vector from another vector, using a deep copy.
    
    Parameters:
    v - Vector to copy.
    
    Throws:
    
    NullArgumentException - if v is null.
  - ArrayFieldVector
```
public ArrayFieldVector(ArrayFieldVector<T> v,
                boolean deep)
                 throws NullArgumentException
```
    Construct a vector from another vector.
    
    Parameters:
    v - Vector to copy.
    deep - If true perform a deep copy, otherwise perform a shallow copy
    
    Throws:
    
    NullArgumentException - if v is null.
  - ArrayFieldVector
```
@Deprecated
public ArrayFieldVector(ArrayFieldVector<T> v1,
                           ArrayFieldVector<T> v2)
                 throws NullArgumentException
```
    Deprecated. as of 3.2, replaced by ArrayFieldVector(FieldVector, FieldVector)
    
    Construct a vector by appending one vector to another vector.
    
    Parameters:
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
  - ArrayFieldVector
```
public ArrayFieldVector(FieldVector<T> v1,
                FieldVector<T> v2)
                 throws NullArgumentException
```
    Construct a vector by appending one vector to another vector.
    
    Parameters:
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
    Since:
    
    3.2
  - ArrayFieldVector
```
@Deprecated
public ArrayFieldVector(ArrayFieldVector<T> v1,
                           T[] v2)
                 throws NullArgumentException
```
    Deprecated. as of 3.2, replaced by ArrayFieldVector(FieldVector, FieldElement[])
    
    Construct a vector by appending one vector to another vector.
    
    Parameters:
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
  - ArrayFieldVector
```
public ArrayFieldVector(FieldVector<T> v1,
                T[] v2)
                 throws NullArgumentException
```
    Construct a vector by appending one vector to another vector.
    
    Parameters:
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
    Since:
    
    3.2
  - ArrayFieldVector
```
@Deprecated
public ArrayFieldVector(T[] v1,
                           ArrayFieldVector<T> v2)
                 throws NullArgumentException
```
    Deprecated. as of 3.2, replaced by ArrayFieldVector(FieldElement[], FieldVector)
    
    Construct a vector by appending one vector to another vector.
    
    Parameters:
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
  - ArrayFieldVector
```
public ArrayFieldVector(T[] v1,
                FieldVector<T> v2)
                 throws NullArgumentException
```
    Construct a vector by appending one vector to another vector.
    
    Parameters:
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
    Since:
    
    3.2
  - ArrayFieldVector
```
public ArrayFieldVector(T[] v1,
                T[] v2)
                 throws NullArgumentException,
                        ZeroException
```
    Construct a vector by appending one vector to another vector. This constructor needs at least one non-empty array to retrieve the field from its first element. This implies it cannot build 0 length vectors. To build vectors from any size, one should use the ArrayFieldVector(Field, FieldElement[], FieldElement[]) constructor.
    
    Parameters:
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
    
    ZeroException - if both arrays are empty.
    See Also:
    ArrayFieldVector(Field, FieldElement[], FieldElement[])
  - ArrayFieldVector
```
public ArrayFieldVector(Field<T> field,
                T[] v1,
                T[] v2)
                 throws NullArgumentException,
                        ZeroException
```
    Construct a vector by appending one vector to another vector.
    
    Parameters:
    field - Field to which the elements belong.
    v1 - First vector (will be put in front of the new vector).
    v2 - Second vector (will be put at back of the new vector).
    
    Throws:
    
    NullArgumentException - if v1 or v2 is null.
    
    ZeroException - if both arrays are empty.
    See Also:
    ArrayFieldVector(FieldElement[], FieldElement[])
- Method Detail
  - getField
```
public Field<T> getField()
```
    Get the type of field elements of the vector.
    
    Specified by:
    
    getField in interface FieldVector<T extends FieldElement<T>>
    
    Returns:
    type of field elements of the vector
  - copy
```
public FieldVector<T> copy()
```
    Returns a (deep) copy of this.
    
    Specified by:
    
    copy in interface FieldVector<T extends FieldElement<T>>
    
    Returns:
    vector copy
  - add
```
public FieldVector<T> add(FieldVector<T> v)
                                           throws DimensionMismatchException
```
    Compute the sum of this and v.
    
    Specified by:
    
    add in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector to be added
    
    Returns:
    this + v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - add
```
public ArrayFieldVector<T> add(ArrayFieldVector<T> v)
                                                throws DimensionMismatchException
```
    Compute the sum of this and v.
    
    Parameters:
    v - vector to be added
    
    Returns:
    this + v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - subtract
```
public FieldVector<T> subtract(FieldVector<T> v)
                                                throws DimensionMismatchException
```
    Compute this minus v.
    
    Specified by:
    
    subtract in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector to be subtracted
    
    Returns:
    this - v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - subtract
```
public ArrayFieldVector<T> subtract(ArrayFieldVector<T> v)
                                                     throws DimensionMismatchException
```
    Compute this minus v.
    
    Parameters:
    v - vector to be subtracted
    
    Returns:
    this - v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - mapAdd
```
public FieldVector<T> mapAdd(T d)
                                              throws NullArgumentException
```
    Map an addition operation to each entry.
    
    Specified by:
    
    mapAdd in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to be added to each entry
    
    Returns:
    this + d
    
    Throws:
    
    NullArgumentException - if d is null.
  - mapAddToSelf
```
public FieldVector<T> mapAddToSelf(T d)
                                                    throws NullArgumentException
```
    Map an addition operation to each entry.
    The instance is changed by this method.
    
    Specified by:
    
    mapAddToSelf in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to be added to each entry
    
    Returns:
    for convenience, return this
    
    Throws:
    
    NullArgumentException - if d is null.
  - mapSubtract
```
public FieldVector<T> mapSubtract(T d)
                                                   throws NullArgumentException
```
    Map a subtraction operation to each entry.
    
    Specified by:
    
    mapSubtract in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to be subtracted to each entry
    
    Returns:
    this - d
    
    Throws:
    
    NullArgumentException - if d is null
  - mapSubtractToSelf
```
public FieldVector<T> mapSubtractToSelf(T d)
                                                         throws NullArgumentException
```
    Map a subtraction operation to each entry.
    The instance is changed by this method.
    
    Specified by:
    
    mapSubtractToSelf in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to be subtracted to each entry
    
    Returns:
    for convenience, return this
    
    Throws:
    
    NullArgumentException - if d is null
  - mapMultiply
```
public FieldVector<T> mapMultiply(T d)
                                                   throws NullArgumentException
```
    Map a multiplication operation to each entry.
    
    Specified by:
    
    mapMultiply in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to multiply all entries by
    
    Returns:
    this * d
    
    Throws:
    
    NullArgumentException - if d is null.
  - mapMultiplyToSelf
```
public FieldVector<T> mapMultiplyToSelf(T d)
                                                         throws NullArgumentException
```
    Map a multiplication operation to each entry.
    The instance is changed by this method.
    
    Specified by:
    
    mapMultiplyToSelf in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to multiply all entries by
    
    Returns:
    for convenience, return this
    
    Throws:
    
    NullArgumentException - if d is null.
  - mapDivide
```
public FieldVector<T> mapDivide(T d)
                                                 throws NullArgumentException,
                                                        MathArithmeticException
```
    Map a division operation to each entry.
    
    Specified by:
    
    mapDivide in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to divide all entries by
    
    Returns:
    this / d
    
    Throws:
    
    NullArgumentException - if d is null.
    
    MathArithmeticException - if d is zero.
  - mapDivideToSelf
```
public FieldVector<T> mapDivideToSelf(T d)
                                                       throws NullArgumentException,
                                                              MathArithmeticException
```
    Map a division operation to each entry.
    The instance is changed by this method.
    
    Specified by:
    
    mapDivideToSelf in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    d - value to divide all entries by
    
    Returns:
    for convenience, return this
    
    Throws:
    
    NullArgumentException - if d is null.
    
    MathArithmeticException - if d is zero.
  - mapInv
```
public FieldVector<T> mapInv()
                                              throws MathArithmeticException
```
    Map the 1/x function to each entry.
    
    Specified by:
    
    mapInv in interface FieldVector<T extends FieldElement<T>>
    
    Returns:
    a vector containing the result of applying the function to each entry.
    
    Throws:
    
    MathArithmeticException - if one of the entries is zero.
  - mapInvToSelf
```
public FieldVector<T> mapInvToSelf()
                                                    throws MathArithmeticException
```
    Map the 1/x function to each entry.
    The instance is changed by this method.
    
    Specified by:
    
    mapInvToSelf in interface FieldVector<T extends FieldElement<T>>
    
    Returns:
    for convenience, return this
    
    Throws:
    
    MathArithmeticException - if one of the entries is zero.
  - ebeMultiply
```
public FieldVector<T> ebeMultiply(FieldVector<T> v)
                                                   throws DimensionMismatchException
```
    Element-by-element multiplication.
    
    Specified by:
    
    ebeMultiply in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector by which instance elements must be multiplied
    
    Returns:
    a vector containing this[i] * v[i] for all i
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - ebeMultiply
```
public ArrayFieldVector<T> ebeMultiply(ArrayFieldVector<T> v)
                                                        throws DimensionMismatchException
```
    Element-by-element multiplication.
    
    Parameters:
    v - vector by which instance elements must be multiplied
    
    Returns:
    a vector containing this[i] * v[i] for all i
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - ebeDivide
```
public FieldVector<T> ebeDivide(FieldVector<T> v)
                                                 throws DimensionMismatchException,
                                                        MathArithmeticException
```
    Element-by-element division.
    
    Specified by:
    
    ebeDivide in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector by which instance elements must be divided
    
    Returns:
    a vector containing this[i] / v[i] for all i
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
    
    MathArithmeticException - if one entry of v is zero.
  - ebeDivide
```
public ArrayFieldVector<T> ebeDivide(ArrayFieldVector<T> v)
                                                      throws DimensionMismatchException,
                                                             MathArithmeticException
```
    Element-by-element division.
    
    Parameters:
    v - vector by which instance elements must be divided
    
    Returns:
    a vector containing this[i] / v[i] for all i
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
    
    MathArithmeticException - if one entry of v is zero.
  - getData
```
public T[] getData()
```
    Returns vector entries as a T array.
    
    Specified by:
    
    getData in interface FieldVector<T extends FieldElement<T>>
    
    Returns:
    T array of entries
  - getDataRef
```
public T[] getDataRef()
```
    Returns a reference to the underlying data array.
    Does not make a fresh copy of the underlying data.
    
    Returns:
    array of entries
  - dotProduct
```
public T dotProduct(FieldVector<T> v)
                                     throws DimensionMismatchException
```
    Compute the dot product.
    
    Specified by:
    
    dotProduct in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector with which dot product should be computed
    
    Returns:
    the scalar dot product of this and v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - dotProduct
```
public T dotProduct(ArrayFieldVector<T> v)
                                     throws DimensionMismatchException
```
    Compute the dot product.
    
    Parameters:
    v - vector with which dot product should be computed
    
    Returns:
    the scalar dot product of this and v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
  - projection
```
public FieldVector<T> projection(FieldVector<T> v)
                                                  throws DimensionMismatchException,
                                                         MathArithmeticException
```
    Find the orthogonal projection of this vector onto another vector.
    
    Specified by:
    
    projection in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector onto which this must be projected
    
    Returns:
    projection of this onto v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
    
    MathArithmeticException - if v is the null vector.
  - projection
```
public ArrayFieldVector<T> projection(ArrayFieldVector<T> v)
                                                       throws DimensionMismatchException,
                                                              MathArithmeticException
```
    Find the orthogonal projection of this vector onto another vector.
    
    Parameters:
    v - vector onto which this must be projected
    
    Returns:
    projection of this onto v
    
    Throws:
    
    DimensionMismatchException - if v is not the same size as this
    
    MathArithmeticException - if v is the null vector.
  - outerProduct
```
public FieldMatrix<T> outerProduct(FieldVector<T> v)
```
    Compute the outer product.
    
    Specified by:
    
    outerProduct in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector with which outer product should be computed
    
    Returns:
    the matrix outer product between instance and v
  - outerProduct
```
public FieldMatrix<T> outerProduct(ArrayFieldVector<T> v)
```
    Compute the outer product.
    
    Parameters:
    v - vector with which outer product should be computed
    
    Returns:
    the matrix outer product between instance and v
  - getEntry
```
public T getEntry(int index)
```
    Returns the entry in the specified index.
    
    Specified by:
    
    getEntry in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    index - Index location of entry to be fetched.
    
    Returns:
    the vector entry at index.
    See Also:
    FieldVector.setEntry(int, FieldElement)
  - getDimension
```
public int getDimension()
```
    Returns the size of the vector.
    
    Specified by:
    
    getDimension in interface FieldVector<T extends FieldElement<T>>
    
    Returns:
    size
  - append
```
public FieldVector<T> append(FieldVector<T> v)
```
    Construct a vector by appending a vector to this vector.
    
    Specified by:
    
    append in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    v - vector to append to this one.
    
    Returns:
    a new vector
  - append
```
public ArrayFieldVector<T> append(ArrayFieldVector<T> v)
```
    Construct a vector by appending a vector to this vector.
    
    Parameters:
    v - vector to append to this one.
    
    Returns:
    a new vector
  - append
```
public FieldVector<T> append(T in)
```
    Construct a vector by appending a T to this vector.
    
    Specified by:
    
    append in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    in - T to append.
    
    Returns:
    a new vector
  - getSubVector
```
public FieldVector<T> getSubVector(int index,
                          int n)
                                                    throws OutOfRangeException,
                                                           NotPositiveException
```
    Get a subvector from consecutive elements.
    
    Specified by:
    
    getSubVector in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    index - index of first element.
    n - number of elements to be retrieved.
    
    Returns:
    a vector containing n elements.
    
    Throws:
    
    OutOfRangeException - if the index is not valid.
    
    NotPositiveException - if the number of elements if not positive.
  - setEntry
```
public void setEntry(int index,
            T value)
```
    Set a single element.
    
    Specified by:
    
    setEntry in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    index - element index.
    value - new value for the element.
    See Also:
    FieldVector.getEntry(int)
  - setSubVector
```
public void setSubVector(int index,
                FieldVector<T> v)
                  throws OutOfRangeException
```
    Set a set of consecutive elements.
    
    Specified by:
    
    setSubVector in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    index - index of first element to be set.
    v - vector containing the values to set.
    
    Throws:
    
    OutOfRangeException - if the index is not valid.
  - set
```
public void set(int index,
       ArrayFieldVector<T> v)
         throws OutOfRangeException
```
    Set a set of consecutive elements.
    
    Parameters:
    index - index of first element to be set.
    v - vector containing the values to set.
    
    Throws:
    
    OutOfRangeException - if the index is invalid.
  - set
```
public void set(T value)
```
    Set all elements to a single value.
    
    Specified by:
    
    set in interface FieldVector<T extends FieldElement<T>>
    
    Parameters:
    value - single value to set for all elements
  - toArray
```
public T[] toArray()
```
    Convert the vector to a T array.
    The array is independent from vector data, it's elements are copied.
    
    Specified by:
    
    toArray in interface FieldVector<T extends FieldElement<T>>
    
    Returns:
    array containing a copy of vector elements
  - checkVectorDimensions
```
protected void checkVectorDimensions(FieldVector<T> v)
                              throws DimensionMismatchException
```
    Check if instance and specified vectors have the same dimension.
    
    Parameters:
    v - vector to compare instance with
    
    Throws:
    
    DimensionMismatchException - if the vectors do not have the same dimensions
  - checkVectorDimensions
```
protected void checkVectorDimensions(int n)
                              throws DimensionMismatchException
```
    Check if instance dimension is equal to some expected value.
    
    Parameters:
    n - Expected dimension.
    
    Throws:
    
    DimensionMismatchException - if the dimension is not equal to the size of this vector.
  - walkInDefaultOrder
```
public T walkInDefaultOrder(FieldVectorPreservingVisitor<T> visitor)
```
    Visits (but does not alter) all entries of this vector in default order (increasing index).
    
    Parameters:
    visitor - the visitor to be used to process the entries of this vector
    
    Returns:
    the value returned by FieldVectorPreservingVisitor.end() at the end of the walk
    Since:
    
    3.3
  - walkInDefaultOrder
```
public T walkInDefaultOrder(FieldVectorPreservingVisitor<T> visitor,
                   int start,
                   int end)
                                             throws NumberIsTooSmallException,
                                                    OutOfRangeException
```
    Visits (but does not alter) some entries of this vector in default order (increasing index).
    
    Parameters:
    visitor - visitor to be used to process the entries of this vector
    start - the index of the first entry to be visited
    end - the index of the last entry to be visited (inclusive)
    
    Returns:
    the value returned by FieldVectorPreservingVisitor.end() at the end of the walk
    
    Throws:
    
    NumberIsTooSmallException - if end < start.
    
    OutOfRangeException - if the indices are not valid.
    Since:
    
    3.3
  - walkInOptimizedOrder
```
public T walkInOptimizedOrder(FieldVectorPreservingVisitor<T> visitor)
```
    Visits (but does not alter) all entries of this vector in optimized order. The order in which the entries are visited is selected so as to lead to the most efficient implementation; it might depend on the concrete implementation of this abstract class.
    
    Parameters:
    visitor - the visitor to be used to process the entries of this vector
    
    Returns:
    the value returned by FieldVectorPreservingVisitor.end() at the end of the walk
    Since:
    
    3.3
  - walkInOptimizedOrder
```
public T walkInOptimizedOrder(FieldVectorPreservingVisitor<T> visitor,
                     int start,
                     int end)
                                               throws NumberIsTooSmallException,
                                                      OutOfRangeException
```
    Visits (but does not alter) some entries of this vector in optimized order. The order in which the entries are visited is selected so as to lead to the most efficient implementation; it might depend on the concrete implementation of this abstract class.
    
    Parameters:
    visitor - visitor to be used to process the entries of this vector
    start - the index of the first entry to be visited
    end - the index of the last entry to be visited (inclusive)
    
    Returns:
    the value returned by FieldVectorPreservingVisitor.end() at the end of the walk
    
    Throws:
    
    NumberIsTooSmallException - if end < start.
    
    OutOfRangeException - if the indices are not valid.
    Since:
    
    3.3
  - walkInDefaultOrder
```
public T walkInDefaultOrder(FieldVectorChangingVisitor<T> visitor)
```
    Visits (and possibly alters) all entries of this vector in default order (increasing index).
    
    Parameters:
    visitor - the visitor to be used to process and modify the entries of this vector
    
    Returns:
    the value returned by FieldVectorChangingVisitor.end() at the end of the walk
    Since:
    
    3.3
  - walkInDefaultOrder
```
public T walkInDefaultOrder(FieldVectorChangingVisitor<T> visitor,
                   int start,
                   int end)
                                             throws NumberIsTooSmallException,
                                                    OutOfRangeException
```
    Visits (and possibly alters) some entries of this vector in default order (increasing index).
    
    Parameters:
    visitor - visitor to be used to process the entries of this vector
    start - the index of the first entry to be visited
    end - the index of the last entry to be visited (inclusive)
    
    Returns:
    the value returned by FieldVectorChangingVisitor.end() at the end of the walk
    
    Throws:
    
    NumberIsTooSmallException - if end < start.
    
    OutOfRangeException - if the indices are not valid.
    Since:
    
    3.3
  - walkInOptimizedOrder
```
public T walkInOptimizedOrder(FieldVectorChangingVisitor<T> visitor)
```
    Visits (and possibly alters) all entries of this vector in optimized order. The order in which the entries are visited is selected so as to lead to the most efficient implementation; it might depend on the concrete implementation of this abstract class.
    
    Parameters:
    visitor - the visitor to be used to process the entries of this vector
    
    Returns:
    the value returned by FieldVectorChangingVisitor.end() at the end of the walk
    Since:
    
    3.3
  - walkInOptimizedOrder
```
public T walkInOptimizedOrder(FieldVectorChangingVisitor<T> visitor,
                     int start,
                     int end)
                                               throws NumberIsTooSmallException,
                                                      OutOfRangeException
```
    Visits (and possibly change) some entries of this vector in optimized order. The order in which the entries are visited is selected so as to lead to the most efficient implementation; it might depend on the concrete implementation of this abstract class.
    
    Parameters:
    visitor - visitor to be used to process the entries of this vector
    start - the index of the first entry to be visited
    end - the index of the last entry to be visited (inclusive)
    
    Returns:
    the value returned by FieldVectorChangingVisitor.end() at the end of the walk
    
    Throws:
    
    NumberIsTooSmallException - if end < start.
    
    OutOfRangeException - if the indices are not valid.
    Since:
    
    3.3
  - equals
```
public boolean equals(Object other)
```
    Test for the equality of two vectors.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    other - Object to test for equality.
    
    Returns:
    true if two vector objects are equal, false otherwise.
  - hashCode
```
public int hashCode()
```
    Get a hashCode for the real vector.
    All NaN values have the same hash code.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    a hash code value for this object

Class ArrayFieldVector<T extends FieldElement<T>>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

ArrayFieldVector

Method Detail

getField

copy

add

add

subtract

subtract

mapAdd

mapAddToSelf

mapSubtract

mapSubtractToSelf

mapMultiply

mapMultiplyToSelf

mapDivide

mapDivideToSelf

mapInv

mapInvToSelf

ebeMultiply

ebeMultiply

ebeDivide

ebeDivide

getData

getDataRef

dotProduct

dotProduct

projection

projection

outerProduct

outerProduct

getEntry

getDimension

append

append

append

getSubVector

setEntry

setSubVector

set

set

toArray

checkVectorDimensions

checkVectorDimensions

walkInDefaultOrder

walkInDefaultOrder

walkInOptimizedOrder

walkInOptimizedOrder

walkInDefaultOrder

walkInDefaultOrder

walkInOptimizedOrder

walkInOptimizedOrder

equals

hashCode