[R] problems in converting numeric to character

Jeff Newmiller
Thu, 07 Jun 2018 19:40:40 -0000

?formatC (digits, drop0trailing)
?sprintf (format %f)
?cat
?options (digits)

You appear to be confusing source code formatting with output formatting. The
internal representation of a numeric value has no notion of the number of
decimals that were used to enter it into memory from source code. By the time
you (or R) decide to re-convert it to a visual representation (characters), all
trace of the original representation has been forgotten, so you have to be
explicit about your output format, or R will make assumptions.

On June 7, 2018 8:12:27 AM PDT, "???" <ruiyangliu94 at
gmail.com> wrote:
>Hi,
>I am having trouble converting numeric to characters in the format I
>desire. To be more specific, I have a number of numeric as follows:
>
>x<-c(1.0,2.0,2.00,2.1)
>I want to convert them to characters so that the out put would be
>c(?1.0?,?2.0?,?2.00?,?2.1?).
>
>However, I used as.character(x) and the output is:
>"1"   "2"   "2"   ?2.1"
>
>The decimals are removed if the numeric ends with ?.0?. Is there a way
>to circumvent this problem?
>
>Thanks very much!
>
>Sincerely,
>
>Ruiyang Liu
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--
Sent from my phone. Please excuse my brevity.