On Aug 22, 2009, at 6:13 PM, Dajiang J. Liu wrote:
Dear all,I want to convert a long integer to a string, and for
example,
100000000
I used as.character(1000000000) e.g, and it gives me back 1e+???.
What I
want is a exact form, not exponential form. Any ideas how to do it?
Thank
The numeric ("double") type is not "exact" in R. (Read the FAQ) You
can specify an integer by appending an "L" but that will limit the
magnitude.
> 1000000000L
[1] 1000000000
> 10000000000L
[1] 1e+10
Warning message:
non-integer value 10000000000 qualified with L; using numeric value
You are supposed to have control of the length of displayed decimal
numbers with the option for "digits" but it doesn't work for me:
> options("digits" = 12)
> print(1000000000)
[1] 1e+09
> 1000000000
[1] 1e+09
--
David Winsemius
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