[R] number of decimal

[Peter Ehlers]

Ivan Calandra wrote:
> It looks to me that it does more or less the same as format().
> 
> Maybe I didn't explain myself correctly then. I would like to set the 
> number of decimal by default, for the whole R session, like I do with 
> options(digits=6). Except that digits sets up the number of digits 
> (including what is before the "."). I'm looking for some option that 
> will let me set the number of digits AFTER the "."
> 
> Example: I have 102.33556677 and 2.999555666
> If I set the number of decimal to 6, I should get: 102.335567 and 2.999556.
> And that for all numbers that will be in/output from R (read.table, 
> write.table, statistic tests, etc)
> 
> Or is it that I didn't understand everything about formatC() and sprintf()?
You didn't:

formatC(x, digits=6, format="f")
[1] "102.335567" "2.999556"

sprintf("%12.6f", x)
[1] "  102.335567" "    2.999556"

  -Peter Ehlers

 >
> 
> Thanks again
> Ivan
> 
> Le 1/28/2010 15:12, Peter Ehlers a écrit :
>> ?formatC
>> ?sprintf
>>
>> Ivan Calandra wrote:
>>> Hi everybody,
>>>
>>> I'm trying to set the number of decimals (i.e. the number of digits 
>>> after the "."). I looked into options but I can only set the total 
>>> number of digits, with options(digits=6). But since I have different 
>>> variables with different order of magnitude, I would like that 
>>> they're all displayed with the same number of decimals.
>>> I searched for it and found the format() function, with nsmall=6, but 
>>> it is for a given vector. I would like to set it for the whole 
>>> session, as with options.
>>>
>>> Can anyone help me?
>>> Thanks in advance
>>> Ivan
>>>
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>>>
> 
> 

-- 
Peter Ehlers
University of Calgary