Hello,
Sorry I forgot to Cc the list.
And I had forgotten the case where x == 0.
extract <- function(x){
e <- ifelse(x == 0, 0, floor(log10(x)))
m <- x/10^e
list(mantissa = m, exponent = e)
}
extract(c(0, 1.234e12, 12345678901234, 123e123))
Hope this helps,
Rui Barradas
Em 23-06-2013 10:54, Søren Højsgaard escreveu:
Dear all,
Given a number
x<-1.234e12
is there a built-in function for extracting 1.234 and 12 ?
The following "hack" seems clumpsy:
a<-strsplit(format(x, scientific=T),"e")[[1]]
a
[1] "1.234" "+12"
as.numeric(a[1])
[1] 1.234
as.integer(a[2])
[1] 12
Regards
Søren
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