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

1 2 |

`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 |

`round` |
If |

`plot` |
Plotting method. Default is |

`...` |
Optional arguments passed to the plotting method |

The data used to estimate transformations using `powerTransform`

are plotted
in the transformed scale.

None. Produces a graph as a side-effect.

Sanford Weisberg, <sandy@umn.edu>

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.

1 2 | ```
summary(a3 <- powerTransform(cbind(len, adt, trks, shld, sigs1) ~ 1, Highway1))
with(Highway1, plot(a3, z=rate, col=as.numeric(htype)))
``` |

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