PiecewisePolynomialResult (OpenGamma Strata)

java.lang.Object
- com.opengamma.strata.math.impl.interpolation.PiecewisePolynomialResult

Direct Known Subclasses:

PiecewisePolynomialResultsWithSensitivity
```
public class PiecewisePolynomialResult
extends Object
```
Result of interpolation by piecewise polynomial containing _knots: Positions of knots _coefMatrix: Coefficient matrix whose i-th row vector is { a_n, a_{n-1}, ...} for the i-th interval, where a_n, a_{n-1},... are coefficients of f(x) = a_n (x-x_i)^n + a_{n-1} (x-x_i)^{n-1} + .... In multidimensional cases, coefficients for the i-th interval of the j-th spline is in (j*(i-1) + i) -th row vector. _nIntervals: Number of intervals, which should be (Number of knots) - 1 _order: Number of coefficients in polynomial, which is equal to (polynomial degree) + 1 _dim: Number of splines

Constructor Summary

Constructors
Constructor	Description
`PiecewisePolynomialResult(DoubleArray knots, DoubleMatrix coefMatrix, int order, int dim)`	Creates an instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object obj)`
`DoubleMatrix`	`getCoefMatrix()`	Access _coefMatrix.
`int`	`getDimensions()`	Access _dim.
`DoubleArray`	`getKnots()`	Access _knots.
`int`	`getNumberOfIntervals()`	Access _nIntervals.
`int`	`getOrder()`	Access _order.
`int`	`hashCode()`

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

- Constructor Detail
  - PiecewisePolynomialResult
```
public PiecewisePolynomialResult(DoubleArray knots,
                                 DoubleMatrix coefMatrix,
                                 int order,
                                 int dim)
```
    Creates an instance.
    
    Parameters:
    
    knots - the knots
    
    coefMatrix - the coefMatrix
    
    order - the order
    
    dim - the dim
- Method Detail
  - getKnots
```
public DoubleArray getKnots()
```
    Access _knots.
    
    Returns:
    
    the knots
  - getCoefMatrix
```
public DoubleMatrix getCoefMatrix()
```
    Access _coefMatrix.
    
    Returns:
    
    Coefficient Matrix
  - getNumberOfIntervals
```
public int getNumberOfIntervals()
```
    Access _nIntervals.
    
    Returns:
    
    Number of Intervals
  - getOrder
```
public int getOrder()
```
    Access _order.
    
    Returns:
    
    Number of coefficients in polynomial; 2 if _nIntervals=1, 3 if _nIntervals=2, 4 otherwise
  - getDimensions
```
public int getDimensions()
```
    Access _dim.
    
    Returns:
    
    Dimension of spline
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object