On Jul 1, 2004, at 6:09 AM, Douglas Bates wrote:
AS_NUMERIC in C more closely corresponds to as.double() in R
All that as.numeric() in R does is assure that the result is of a numeric mode. It does not coerce integer variables to doubles.
Um... are you sure?? For the sake of lots of code I saw I hope you're wrong:
Check, for example, str(as.numeric(1:100))
Yes:
> str(as.double(1:10)) num [1:10] 1 2 3 4 5 6 7 8 9 10 > str(as.numeric(1:10)) num [1:10] 1 2 3 4 5 6 7 8 9 10 > str(1:10) int [1:10] 1 2 3 4 5 6 7 8 9 10
And moreover:
> as.numeric
function (x, ...)
UseMethod("as.double")
<environment: namespace:base>... admittedly I didn't answer the original question, but I suspect that the problem lies somewhere else ...
Simon
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