org.apache.poi.ss.formula.functions

Class Forecast

java.lang.Object

org.apache.poi.ss.formula.functions.Fixed3ArgFunction

org.apache.poi.ss.formula.functions.Forecast

All Implemented Interfaces:

FreeRefFunction, Function, Function3Arg

public class Forecast
extends Fixed3ArgFunction
implements FreeRefFunction

Implementation for Excel FORECAST() and FORECAST.LINEAR() functions.

Syntax:
FORECAST (number, array1, array2)

See https://support.microsoft.com/en-us/office/forecast-and-forecast-linear-functions-50ca49c9-7b40-4892-94e4-7ad38bbeda99

Field Summary

Fields

Modifier and Type	Field and Description
static Forecast	instance

Method Summary

Modifier and Type	Method and Description
ValueEval	evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1, ValueEval arg2) see Function.evaluate(ValueEval[], int, int)
ValueEval	evaluate(ValueEval[] args, OperationEvaluationContext ec)

Methods inherited from class org.apache.poi.ss.formula.functions.Fixed3ArgFunction

evaluate

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static final Forecast instance

Method Detail

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval arg0,
                          ValueEval arg1,
                          ValueEval arg2)

Description copied from interface: Function3Arg

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

Specified by:

evaluate in interface Function3Arg

evaluate

public ValueEval evaluate(ValueEval[] args,
                          OperationEvaluationContext ec)

Specified by:

evaluate in interface FreeRefFunction

Parameters:

args - the pre-evaluated arguments for this function. args is never null, nor are any of its elements.

ec - primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals.

Returns:

never null. Possibly an instance of ErrorEval in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors).