[R] rounding up (always)

[Duncan Murdoch]

On 20/10/2010 5:16 PM, Dimitri Liakhovitski wrote:
> Hello!
>
> I am trying to round the number always up - i.e., whatever the
> positive number is, I would like it to round it to the closest 10 that
> is higher than this number, the closest 100 that is higher than this
> number, etc.
>
> For example:
> x<-3241.388
>
> signif(x,1) rounds to the closest thousand, i.e., to 3,000, but I'd
> like to get 4,000 instead.
> signif(x,2) rounds to the closest hundred, i.e., to 3,200, but I'd
> like to get 3,300 instead.
> signif(x,3) rounds to the closest ten, i.e., to 3,240, but I'd like to
> get 3,250 instead.
>
> Of course, I could do:
> floor(signif(x,1)+1000)
> floor(signif(x,2)+100)
> floor(signif(x,3)+10)
>
> But it's very manual - because in the problem I am facing the numbers
> sometimes have to be rounded to a 1000, sometimes to a 100, etc.

Write a function.  You have very particular needs, so it's unlikely 
there's already one out there that matches them.

Duncan Murdoch