Dear Brittany,
As explained in ?powerTransform, this function uses optim() to optimize a
generalized Box-Cox criterion. For explanation of return codes, see ?optim.
In particular, code 1 indicates that the maximum number of iterations was
exceeded. Although you might try increasing the permitt
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 ret
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