Re: [R] Pretty printing numbers

From: Peter Langfelder <peter.langfelder_at_gmail.com>
Date: Sun, 08 May 2011 16:45:35 -0700

On Sun, May 8, 2011 at 4:41 PM, Worik R <worikr_at_gmail.com> wrote:
> Friends
>
> I am trying to format a number to a string so 2189.745 goes to "2,189.35"
> and 309283.929 goes to "309,283.93"
>
> I have tried to use formatC(X, big.mark=",",drop0trailing=FALSE, format="f")
> but it does not get the number of decimals correct.  Specifying digits does
> not work as that is significant digits.  I could use a switch statement
> switching on the size of the number to be formated to set the digits
> parameter but that is complex and leaves me insecure that thre may be other
> problems I have not uncovered.
>
> Is there a simple way of using library functions to insert big.marks and get
> the number of trailing digits correct?  Perhaps some way of using sprintf?
>

Try this inserting a round() step before the final printing:

x = 309283.929

formatC(round(x, 2), big.mark=",",drop0trailing=TRUE, format="f")

[1] "309,283.93"

HTH, Peter

> cheers
> Worik
>
>        [[alternative HTML version deleted]]
>
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-- 
Sent from my Linux computer. Way better than iPad :)

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Received on Sun 08 May 2011 - 23:47:55 GMT

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