ATA.BoxCoxAttr {ATAforecasting} | R Documentation |

## The ATA.BoxCoxAttr function works with many different types of inputs.

### Description

The ATA.BoxCoxAttr function works with many different types of inputs.

### Usage

```
ATA.BoxCoxAttr(
bcMethod = "guerrero",
bcLower = 0,
bcUpper = 5,
bcBiasAdj = FALSE
)
```

### Arguments

`bcMethod` |
Choose method to be used in calculating lambda. "guerrero" (Guerrero, V.M. (1993) is default. Other method is "loglik"). |

`bcLower` |
Lower limit for possible lambda values. The lower value is limited by -5. Default value is 0. |

`bcUpper` |
Upper limit for possible lambda values. The upper value is limited by 5. Default value is 5. |

`bcBiasAdj` |
Use adjusted back-transformed mean for Box-Cox transformations.
If transformed data is used to produce forecasts and fitted values, a regular back transformation will result in median forecasts.
If bcBiasAdj is TRUE, an adjustment will be made to produce mean forecasts and fitted values.
If bcBiasAdj=TRUE. Can either be the forecast variance, or a list containing the interval |

### Value

An object of class `ataoptim`

.

### Author(s)

Ali Sabri Taylan and Hanife Taylan Selamlar

### References

#'Box GEP, Cox DR (1964).
“An Analysis of Transformations.”
*Journal of the Royal Statistical Society. Series B (Methodological)*, **26**(2), 211–252.

#'Guerrero VM (1993).
“Time-series analysis supported by power transformations.”
*Journal of Forecasting*, **12**(1), 37–48.

### See Also

`BoxCox`

, `InvBoxCox`

, `BoxCox.lambda`

*ATAforecasting*version 0.0.60 Index]