LegendreRuleFactory (Apache Commons Math 4.0-SNAPSHOT API)

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java.lang.Object
- org.apache.commons.math4.analysis.integration.gauss.BaseRuleFactory<Double>
- - org.apache.commons.math4.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 .

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.math4.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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