[R] rounding format

[Prof Brian Ripley]

On Wed, 2 Jan 2008, jim holtman wrote:

>> sprintf("%.4f", 0.0002234)
> [1] "0.0002"

Or, literally for printing, use options(scipen=).  Note that 
round(0.0002234,4) does return (a representable number very close to) 
0.0002, but it is printed by default as 2e-04.

> round(0.0002234,4)
[1] 2e-04
> options(scipen=4)
> round(0.0002234,4)
[1] 0.0002

>
>
> On Jan 2, 2008 1:45 PM, array chip <arrayprofile at yahoo.com> wrote:
>> Hi,
>>
>> The code round(0.0002234,4) will return 2e-04, how can
>> I return 0.0002 instead? I want to print 0.0002
>> instead of 2e-04 for formating purpose.
>>
>> thanks
>>
>>
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>
>
>
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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