[R] format numbers using 1000 separator

[Peter Dalgaard]

tom soyer wrote:
> Hi,
>
> Does anyone know how one could format numbers using 1000 separator in R? For
> example, format 1000 as 1,000 and 100000 as 100,000, etc.
>
> Thanks,
You're at the mercy of the system sprintf, but on Fedora, this works:

 > Sys.setlocale("LC_NUMERIC","da_DK.UTF-8")
[1] "da_DK.UTF-8"
Warning message:
In Sys.setlocale("LC_NUMERIC", "da_DK.UTF-8") :
  setting 'LC_NUMERIC' may cause R to function strangely
 > sprintf("%'f",pi*1e7)
[1] "31.415.926,535898"
 > Sys.setlocale("LC_NUMERIC","C")
[1] "C"
Warning message:
In Sys.setlocale("LC_NUMERIC", "C") :
  setting 'LC_NUMERIC' may cause R to function strangely

Be aware that those warnings are there for a reason....

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   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
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