[R] integer and character conversion

[Benilton Carvalho]

it's 'scipen' you want to look at.. b
On Aug 22, 2009, at 11:16 PM, David Winsemius wrote:

>
> 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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