org.apache.poi.ss.formula.functions

Class LinearRegressionFunction

java.lang.Object

org.apache.poi.ss.formula.functions.Fixed2ArgFunction

org.apache.poi.ss.formula.functions.LinearRegressionFunction

All Implemented Interfaces:

Function, Function2Arg

public final class LinearRegressionFunction
extends Fixed2ArgFunction

Base class for linear regression functions. Calculates the linear regression line that is used to predict y values from x values
(http://introcs.cs.princeton.edu/java/97data/LinearRegression.java.html) Syntax:
INTERCEPT(arrayX, arrayY)

or SLOPE(arrayX, arrayY)

Author:

Johan Karlsteen

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LinearRegressionFunction.FUNCTION

Field Summary

Fields

Modifier and Type	Field and Description
LinearRegressionFunction.FUNCTION	function

Constructor Summary

Constructors

Constructor and Description
LinearRegressionFunction(LinearRegressionFunction.FUNCTION function)

Method Summary

Modifier and Type	Method and Description
ValueEval	evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1) see Function.evaluate(ValueEval[], int, int)

Methods inherited from class org.apache.poi.ss.formula.functions.Fixed2ArgFunction

evaluate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

function

public LinearRegressionFunction.FUNCTION function

Constructor Detail

LinearRegressionFunction

public LinearRegressionFunction(LinearRegressionFunction.FUNCTION function)

Method Detail

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval arg0,
                          ValueEval arg1)

Description copied from interface: Function2Arg

see Function.evaluate(ValueEval[], int, int)