[R] rounding up (always)

[Clint Bowman]

x<-runif(10,1,100000)  # generate 10 numbers
as.integer(log(x,10)+1)


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On Wed, 20 Oct 2010, Duncan Murdoch wrote:

> 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
>
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