Dear Rlist,
Using an example in box.cox.powers() help, I have the following warning message.
example:
library(car)
>attach(Prestige)
> box.cox.powers(income)
Box-Cox Transformation to Normality
Est.Power Std.Err. Wald(Power=0) Wald(Power=1)
0.1793 0.1108 1.6179 -7.4062
L.R. test, power = 0: 2.7103 df = 1 p = 0.0997
L.R. test, power = 1: 47.261 df = 1 p = 0
Warning message:
In optimize(f = function(lambda) univ.neg.kernel.logL(x = X[, j], :
NA/Inf replaced by maximum positive value
I do not know the reason for such warning message.
Can someone help me on this matter?
Best regards,
Clara Cordeiro
> sessionInfo()
R version 2.6.1 (2007-11-26)
i386-pc-mingw32
locale:
LC_COLLATE=Portuguese_Portugal.1252;LC_CTYPE=Portuguese_Portugal.1252;LC_MONETARY=Portuguese_Portugal.1252;LC_NUMERIC=C;LC_TIME=Portuguese_Portugal.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] nnet_7.2-38 car_1.2-7 MASS_7.2-38 FitAR_1.0 leaps_2.7
[6] lattice_0.17-2
loaded via a namespace (and not attached):
[1] grid_2.6.1 tools_2.6.1
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