# Uses of Interface
org.apache.commons.math3.Field

Packages that use Field
Package
Description
org.apache.commons.math3
Common classes used throughout the commons-math library.
org.apache.commons.math3.analysis.differentiation
This package holds the main interfaces and basic building block classes dealing with differentiation.
org.apache.commons.math3.complex
Complex number type and implementations of complex transcendental functions.
org.apache.commons.math3.dfp
Decimal floating point library for Java
org.apache.commons.math3.fraction
Fraction number type and fraction number formatting.
org.apache.commons.math3.linear
Linear algebra support.
org.apache.commons.math3.ode
This package provides classes to solve Ordinary Differential Equations problems.
org.apache.commons.math3.ode.nonstiff
This package provides classes to solve non-stiff Ordinary Differential Equations problems.
org.apache.commons.math3.util
Convenience routines and common data structures used throughout the commons-math library.

## Uses of Field in org.apache.commons.math3

Methods in org.apache.commons.math3 that return Field
Modifier and Type
Method
Description
`Field<T>`
FieldElement.`getField()`
Get the `Field` to which the instance belongs.

## Uses of Field in org.apache.commons.math3.analysis.differentiation

Methods in org.apache.commons.math3.analysis.differentiation that return Field
Modifier and Type
Method
Description
`Field<DerivativeStructure>`
DerivativeStructure.`getField()`
Get the `Field` to which the instance belongs.
`Field<SparseGradient>`
SparseGradient.`getField()`
Get the `Field` to which the instance belongs.

## Uses of Field in org.apache.commons.math3.complex

Classes in org.apache.commons.math3.complex that implement Field
Modifier and Type
Class
Description
`class`
`ComplexField`
Representation of the complex numbers field.

## Uses of Field in org.apache.commons.math3.dfp

Classes in org.apache.commons.math3.dfp that implement Field
Modifier and Type
Class
Description
`class`
`DfpField`
Field for Decimal floating point instances.

## Uses of Field in org.apache.commons.math3.fraction

Classes in org.apache.commons.math3.fraction that implement Field
Modifier and Type
Class
Description
`class`
`BigFractionField`
Representation of the fractional numbers without any overflow field.
`class`
`FractionField`
Representation of the fractional numbers field.

## Uses of Field in org.apache.commons.math3.linear

Methods in org.apache.commons.math3.linear that return Field
Modifier and Type
Method
Description
`protected static <T extends FieldElement<T>>
Field<T>`
AbstractFieldMatrix.`extractField(T[] d)`
Get the elements type from an array.
`protected static <T extends FieldElement<T>>
Field<T>`
AbstractFieldMatrix.`extractField(T[][] d)`
Get the elements type from an array.
`Field<T>`
AbstractFieldMatrix.`getField()`
Get the type of field elements of the matrix.
`Field<T>`
ArrayFieldVector.`getField()`
Get the type of field elements of the vector.
`Field<T>`
FieldMatrix.`getField()`
Get the type of field elements of the matrix.
`Field<T>`
FieldVector.`getField()`
Get the type of field elements of the vector.
`Field<T>`
SparseFieldVector.`getField()`
Get the type of field elements of the vector.
Methods in org.apache.commons.math3.linear with parameters of type Field
Modifier and Type
Method
Description
`protected static <T extends FieldElement<T>>
T[]`
AbstractFieldMatrix.`buildArray(Field<T> field, int length)`
Deprecated.
as of 3.2, replaced by `MathArrays.buildArray(Field, int)`
`protected static <T extends FieldElement<T>>
T[][]`
AbstractFieldMatrix.`buildArray(Field<T> field, int rows, int columns)`
Deprecated.
as of 3.2, replaced by `MathArrays.buildArray(Field, int, int)`
`static <T extends FieldElement<T>>
T[][]`
BlockFieldMatrix.`createBlocksLayout(Field<T> field, int rows, int columns)`
Create a data array in blocks layout.
`static <T extends FieldElement<T>>
FieldMatrix<T>`
MatrixUtils.`createFieldIdentityMatrix(Field<T> field, int dimension)`
Returns `dimension x dimension` identity matrix.
`static <T extends FieldElement<T>>
FieldMatrix<T>`
MatrixUtils.`createFieldMatrix(Field<T> field, int rows, int columns)`
Returns a `FieldMatrix` with specified dimensions.
Constructors in org.apache.commons.math3.linear with parameters of type Field
Modifier
Constructor
Description
`protected`
`AbstractFieldMatrix(Field<T> field)`
Creates a matrix with no data
`protected`
`AbstractFieldMatrix(Field<T> field, int rowDimension, int columnDimension)`
Create a new FieldMatrix<T> with the supplied row and column dimensions.
``
`Array2DRowFieldMatrix(Field<T> field)`
Creates a matrix with no data
``
`Array2DRowFieldMatrix(Field<T> field, int rowDimension, int columnDimension)`
Create a new `FieldMatrix<T>` with the supplied row and column dimensions.
``
`Array2DRowFieldMatrix(Field<T> field, T[] v)`
Create a new (column) `FieldMatrix<T>` using `v` as the data for the unique column of the created matrix.
``
`Array2DRowFieldMatrix(Field<T> field, T[][] d)`
Create a new `FieldMatrix<T>` using the input array as the underlying data array.
``
`Array2DRowFieldMatrix(Field<T> field, T[][] d, boolean copyArray)`
Create a new `FieldMatrix<T>` using the input array as the underlying data array.
``
`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.
``
`BlockFieldMatrix(Field<T> field, int rows, int columns)`
Create a new matrix with the supplied row and column dimensions.
``
`SparseFieldMatrix(Field<T> field)`
Create a matrix with no data.
``
`SparseFieldMatrix(Field<T> field, int rowDimension, int columnDimension)`
Create a new SparseFieldMatrix<T> with the supplied row and column dimensions.
``
`SparseFieldVector(Field<T> field)`
Build a 0-length vector.
``
`SparseFieldVector(Field<T> field, int dimension)`
Construct a vector of zeroes.
``
`SparseFieldVector(Field<T> field, int dimension, int expectedSize)`
Build a vector with known the sparseness (for advanced use only).
``
`SparseFieldVector(Field<T> field, T[] values)`
Create from a Field array.

## Uses of Field in org.apache.commons.math3.ode

Methods in org.apache.commons.math3.ode that return Field
Modifier and Type
Method
Description
`Field<T>`
AbstractFieldIntegrator.`getField()`
Get the field to which state vector elements belong.
Methods in org.apache.commons.math3.ode with parameters of type Field
Modifier and Type
Method
Description
`protected T[][]`
FieldODEState.`copy(Field<T> field, T[][] original)`
Copy a two-dimensions array.
Constructors in org.apache.commons.math3.ode with parameters of type Field
Modifier
Constructor
Description
`protected`
`AbstractFieldIntegrator(Field<T> field, String name)`
Build an instance.
`protected`
`MultistepFieldIntegrator(Field<T> field, String name, int nSteps, int order, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Build a multistep integrator with the given stepsize bounds.
`protected`
`MultistepFieldIntegrator(Field<T> field, String name, int nSteps, int order, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Build a multistep integrator with the given stepsize bounds.

## Uses of Field in org.apache.commons.math3.ode.nonstiff

Methods in org.apache.commons.math3.ode.nonstiff with parameters of type Field
Modifier and Type
Method
Description
`static <T extends RealFieldElement<T>>
AdamsNordsieckFieldTransformer<T>`
AdamsNordsieckFieldTransformer.`getInstance(Field<T> field, int nSteps)`
Get the Nordsieck transformer for a given field and number of steps.
Constructors in org.apache.commons.math3.ode.nonstiff with parameters of type Field
Modifier
Constructor
Description
``
`AdamsBashforthFieldIntegrator(Field<T> field, int nSteps, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Build an Adams-Bashforth integrator with the given order and step control parameters.
``
`AdamsBashforthFieldIntegrator(Field<T> field, int nSteps, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Build an Adams-Bashforth integrator with the given order and step control parameters.
``
`AdamsFieldIntegrator(Field<T> field, String name, int nSteps, int order, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Build an Adams integrator with the given order and step control parameters.
``
`AdamsFieldIntegrator(Field<T> field, String name, int nSteps, int order, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Build an Adams integrator with the given order and step control parameters.
``
`AdamsMoultonFieldIntegrator(Field<T> field, int nSteps, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Build an Adams-Moulton integrator with the given order and error control parameters.
``
`AdamsMoultonFieldIntegrator(Field<T> field, int nSteps, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Build an Adams-Moulton integrator with the given order and error control parameters.
``
`AdaptiveStepsizeFieldIntegrator(Field<T> field, String name, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Build an integrator with the given stepsize bounds.
``
`AdaptiveStepsizeFieldIntegrator(Field<T> field, String name, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Build an integrator with the given stepsize bounds.
``
`ClassicalRungeKuttaFieldIntegrator(Field<T> field, T step)`
Simple constructor.
``
`DormandPrince54FieldIntegrator(Field<T> field, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Simple constructor.
``
`DormandPrince54FieldIntegrator(Field<T> field, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Simple constructor.
``
`DormandPrince853FieldIntegrator(Field<T> field, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Simple constructor.
``
`DormandPrince853FieldIntegrator(Field<T> field, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Simple constructor.
`protected`
`EmbeddedRungeKuttaFieldIntegrator(Field<T> field, String name, int fsal, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Build a Runge-Kutta integrator with the given Butcher array.
`protected`
`EmbeddedRungeKuttaFieldIntegrator(Field<T> field, String name, int fsal, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Build a Runge-Kutta integrator with the given Butcher array.
``
`EulerFieldIntegrator(Field<T> field, T step)`
Simple constructor.
``
`GillFieldIntegrator(Field<T> field, T step)`
Simple constructor.
``
`HighamHall54FieldIntegrator(Field<T> field, double minStep, double maxStep, double[] vecAbsoluteTolerance, double[] vecRelativeTolerance)`
Simple constructor.
``
`HighamHall54FieldIntegrator(Field<T> field, double minStep, double maxStep, double scalAbsoluteTolerance, double scalRelativeTolerance)`
Simple constructor.
``
`LutherFieldIntegrator(Field<T> field, T step)`
Simple constructor.
``
`MidpointFieldIntegrator(Field<T> field, T step)`
Simple constructor.
`protected`
`RungeKuttaFieldIntegrator(Field<T> field, String name, T step)`
Simple constructor.
``
`ThreeEighthesFieldIntegrator(Field<T> field, T step)`
Simple constructor.

## Uses of Field in org.apache.commons.math3.util

Classes in org.apache.commons.math3.util that implement Field
Modifier and Type
Class
Description
`class`
`BigRealField`
Representation of real numbers with arbitrary precision field.
`class`
`Decimal64Field`
The field of double precision floating-point numbers.
Methods in org.apache.commons.math3.util that return Field
Modifier and Type
Method
Description
`Field<BigReal>`
BigReal.`getField()`
Get the `Field` to which the instance belongs.
`Field<Decimal64>`
Decimal64.`getField()`
Get the `Field` to which the instance belongs.
Methods in org.apache.commons.math3.util with parameters of type Field
Modifier and Type
Method
Description
`static <T> T[]`
MathArrays.`buildArray(Field<T> field, int length)`
Build an array of elements.
`static <T> T[][]`
MathArrays.`buildArray(Field<T> field, int rows, int columns)`
Build a double dimension array of elements.
Constructors in org.apache.commons.math3.util with parameters of type Field
Modifier
Constructor
Description
``
`OpenIntToFieldHashMap(Field<T> field)`
Build an empty map with default size and using zero for missing entries.
``
`OpenIntToFieldHashMap(Field<T> field, int expectedSize)`
Build an empty map with specified size and using zero for missing entries.
``
`OpenIntToFieldHashMap(Field<T> field, int expectedSize, T missingEntries)`
Build an empty map with specified size.
``
`OpenIntToFieldHashMap(Field<T> field, T missingEntries)`
Build an empty map with default size