12/05/25 09:13:25.21
>>531
ヘルプには
To transform a factor ‘f’ to
approximately its original numeric values,
as.numeric(levels(f))[f]’ is recommended and slightly more
efficient than ‘as.numeric(as.character(f))’.
て書いてあるけどね。
12/05/25 09:13:25.21
>>531
ヘルプには
To transform a factor ‘f’ to
approximately its original numeric values,
as.numeric(levels(f))[f]’ is recommended and slightly more
efficient than ‘as.numeric(as.character(f))’.
て書いてあるけどね。