Covar (Keikai Spreadsheet Build 6.1.0.1 API)

java.lang.Object
- org.apache.poi.ss.formula.functions.Fixed2ArgFunction
- - org.apache.poi.ss.formula.functions.Covar

All Implemented Interfaces:

FreeRefFunction, Function, Function2Arg
```
public class Covar
extends Fixed2ArgFunction
implements FreeRefFunction
```
Implementation for Excel COVAR() and COVARIANCE.P() functions.
Syntax:
COVAR (array1, array2)

See Also:

COVAR, COVARIANCE.P

Field Summary

Fields
Modifier and Type Field Description

static Covar instanceP

static Covar instanceS

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ValueEval`	`evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1)`	see `Function.evaluate(ValueEval[], int, int)`
`ValueEval`	`evaluate(ValueEval[] args, OperationEvaluationContext ec)`

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

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

- Field Detail
  - instanceP
```
public static final Covar instanceP
```
  - instanceS
```
public static final Covar instanceS
```
- 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)
    
    Specified by:
    
    evaluate in interface Function2Arg
  - 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).