[R] powerTransform Convergence error

[Brittany Demmitt]

Hello,

I am trying to use the powerTransform function in the package car to identify the lambda: transform my data.  However, I receive the following warning:

Warning message:
In estimateTransform(x, y, NULL, ...) :
  Convergence failure: return code = 1

I can not find a description of what return code =1  means for the car package.  How do I look that up, or does anyone know what the warning means?

Thank you so much!

Brittany
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