[R] Controlling the precision of the digits printed

[Joshua Wiley]

Hi Kevin,

I am not sure you will find anything other than manual tweaking, that
will vary between no decimals for integers, some for small fractions,
and scientific for very small.  You can also look at:  ?round
?format.  If this is for code/a report, you could make any formatting
you wanted with enough effort and those.

Best regards,

Josh

On Tue, Nov 15, 2011 at 8:18 AM, Kevin Burton <rkevinburton at charter.net> wrote:
> Has anyone come across the right combinations to print a limited number of
> digits? My trial and error approach is taking too much time. Here is what I
> have tried:
>
>
>
>> op <- options()
>
>> a <- c(1e-10,1,2,3,.5,.25)
>
>> names(a) <- c("A", "B", "C", "D", "E", "F")
>
>> # default
>
>> a
>
>      A       B       C       D       E       F
>
> 1.0e-10 1.0e+00 2.0e+00 3.0e+00 5.0e-01 2.5e-01
>
>> options(digits = 4, scipen=5)
>
>> # Doesn't print exponents but there are too many trailing digits
>
>> a
>
>           A            B            C            D            E
> F
>
> 0.0000000001 1.0000000000 2.0000000000 3.0000000000 0.5000000000
> 0.2500000000
>
>
>
>> options(digits = 3, scipen=4)
>
>> # Now we are back to exponents
>
>> a
>
>      A       B       C       D       E       F
>
> 1.0e-10 1.0e+00 2.0e+00 3.0e+00 5.0e-01 2.5e-01
>
>
>
> I would like the integers to print as integers (1,2,3). The larger fractions
> to print something like .5000 or .2500. And the very small number to use
> exponents (1.0e-10)
>
>
>
> Is this possible?
>
>
>
> Thank you.
>
>
>
> Kevin
>
>
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>
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>



-- 
Joshua Wiley
Ph.D. Student, Health Psychology
Programmer Analyst II, ATS Statistical Consulting Group
University of California, Los Angeles
https://joshuawiley.com/