Automatic transformation helper

Chooses between no transformation, log, square root and Box–Cox based on the Breusch-Pagan test statistic.

Usage

autoTransform(model)

Arguments

model

A fitted model of class lm.

Value

A list with elements model (the transformed fit) and method indicating the chosen transformation.

Examples

data(mtcars)
m <- lm(mpg ~ wt + qsec, data = mtcars)
autoTransform(m)
#> [INFO] Running Breusch-Pagan test
#> [INFO] Running Breusch-Pagan test
#> [INFO] Running Breusch-Pagan test
#> [INFO] Running Breusch-Pagan test
#> $model
#> 
#> Call:
#> lm(formula = formula_trans, data = df)
#> 
#> Coefficients:
#> (Intercept)           wt         qsec  
#>      4.4394      -0.5646       0.1015  
#> 
#> 
#> $method
#> [1] "sqrt"
#> 
#> $lambda
#> [1] NA
#>