LegendreRuleFactory (Apache Commons Math 3.6.1 API)

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java.lang.Object
- org.apache.commons.math3.analysis.integration.gauss.BaseRuleFactory<Double>
- - org.apache.commons.math3.analysis.integration.gauss.LegendreRuleFactory

```
public class LegendreRuleFactory
extends BaseRuleFactory<Double>
```
Factory that creates Gauss-type quadrature rule using Legendre polynomials. In this implementation, the lower and upper bounds of the natural interval of integration are -1 and 1, respectively. The Legendre polynomials are evaluated using the recurrence relation presented in Abramowitz and Stegun, 1964.

Since:

3.1

- Constructor Summary
  
  Constructors
  Constructor and Description
  
  LegendreRuleFactory()
- Method Summary
  
  Methods
  Modifier and Type Method and Description
  
  protected Pair<Double[],Double[]> computeRule(int numberOfPoints)
  Computes the rule for the given order.
  - Methods inherited from class org.apache.commons.math3.analysis.integration.gauss.BaseRuleFactory
    addRule, getRule, getRuleInternal
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LegendreRuleFactory
```
public LegendreRuleFactory()
```
- Method Detail
  - computeRule
```
protected Pair<Double[],Double[]> computeRule(int numberOfPoints)
                                       throws DimensionMismatchException
```
    Computes the rule for the given order.
    
    Specified by:
    
    computeRule in class BaseRuleFactory<Double>
    
    Parameters:
    numberOfPoints - Order of the rule to be computed.
    
    Returns:
    the computed rule.
    
    Throws:
    
    DimensionMismatchException - if the elements of the pair do not have the same length.

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