[R] Summary shows wrong maximum

[Bert Gunter]

Folks:

Is 

"So this is at best a matter of opinion, 
and credentials do matter for opinions."

-- Brian Ripley

an R fortunes candidate?

-- Bert Gunter


On Tue, 5 Dec 2006, Oliver Czoske wrote:

> On Mon, 4 Dec 2006, Uwe Ligges wrote:
>> Sebastian Spaeth wrote:
>>> Hi all,
>>> I have a list with a numerical column "cum_hardreuses". By coincidence I
>>> discovered this:
>>>
>>>> max(libs[,"cum_hardreuses"])
>>> [1] 1793
>>>
>>>> summary(libs[,"cum_hardreuses"])
>>>     Min. 1st Qu.  Median    Mean 3rd Qu.    Max.
>>>        1       2       4      36      14    1790
>>>
>>> (note the max value of 1790) Ouch this is bad! Anything I can do to
remedy
>>> this? Known bug?
>>
>> No, it's a feature! See ?summary: printing is done up to 3 significant
>> digits by default.
>
> Unfortunately, '1790' is printed with *four* significant digits, not
> three. The correct representation with three significant digits would have
> to employ scientific notation, 1.79e3.
>
>

-- 
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)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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