# plot.powerTransform

##### plot Method for powerTransform Objects

This function provides a simple function for plotting data using power transformations.

- Keywords
- regression, hplot

##### Usage

```
# S3 method for powerTransform
plot(x, z = NULL, round = TRUE, plot = pairs, ...)
```

##### Arguments

- x
name of the power transformation object

- z
Additional variables of the same length as those used to get the transformation to be plotted, default is

`NULL`

.- round
If

`TRUE`

, the default, use rounded transforms, if`FALSE`

use the MLEs.- plot
Plotting method. Default is

`pairs`

. Another possible choice is`scatterplot.matrix`

from the`car`

package.- …
Optional arguments passed to the plotting method

##### Details

The data used to estimate transformations using `powerTransform`

are plotted
in the transformed scale.

##### Value

None. Produces a graph as a side-effect.

##### References

Weisberg, S. (2014) *Applied Linear Regression*, Fourth Edition, Wiley.

Fox, J. and Weisberg, S. (2011) *An R Companion to Applied Linear Regression*,
Second Edition, Sage.

##### See Also

##### Examples

```
# NOT RUN {
summary(a3 <- powerTransform(cbind(len, adt, trks, shld, sigs1) ~ 1, Highway1))
with(Highway1, plot(a3, z=rate, col=as.numeric(htype)))
# }
```

*Documentation reproduced from package car, version 2.1-6, License: GPL (>= 2)*