It seems to me that preserving information about the kind of number
(or not) present would be useful. I rather like the fact that
as.numeric(as.character(NaN))
and
as.numeric(as.character(Inf))
both work as the identity operator on numeric-like objects. (In this
context, note that both is.numeric(NaN) and is.numeric(Inf) both return
TRUE.) In your example, the character string "ee" does not represent
any number that I know about (at least in standard R).
Kevin
On 9/7/2010 11:23 AM, Ulrike Grömping wrote:
Dear DevelopeRs,
I am surprised about the outcome of the second command:
str(as.character(as.numeric("ee"))) str(as.character(log(-1)))
I would have expected a character NA. Is there an intention behind
this behavior?
Best, Ulrike
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