FPPPY and FPP3 report different Guerrero lambdas for the aus_production "gas" time series

[tc-git-1]

FPPPY and FPP3 report different Guerrero lambdas for the aus_production "gas" time series.
FPP3 reports 0.11, while FPPY reports 0.08.
I also reported this in the Nixtla Slack community at https://nixtlacommunity.slack.com/archives/C031EJJMH46/p1753107018956849
(FPPPY uses coreforecast.scalers.boxcox_lambda to estimate the Guerrero lambda.)

References:
FPPPY, https://otexts.com/fpppy/nbs/03-decomposition.html#mathematical-transformations
FPP3, https://otexts.com/fpp3/transformations.html

[AzulGarza]

thanks @tc-git-1! this was fixed by Nixtla/coreforecast#97. we will update the book with the newest coreforecast version soon.

[tc-git-1]

Fantastic, thanks, glad I could help!