[R] Internal and displayed precision of numbers

Uwe Ligges ligges at statistik.tu-dortmund.de
Wed Nov 5 17:48:58 CET 2008



Oliver Bandel wrote:
> Hello,
> 
> many thanks!
> 
> BTW: I read your book. :)
> It's quite good.

Thank you.


> But I didn'tfoud the precision-stuff in it.
> Adding information about this topic in the next
> edition might be a good idea.

These numeric things are an interesting and important topic, of cours. 
Question is how much to add, since it can be a whole book of its own. I 
am teaching "Computergetützte Statistik" (i.e. something like numerics 
for applied statisticians) this term anyway.

Best,
Uwe





> Nevertheless it explains crucial points very good,
> and from that starting point, it's easier to understand the
> manuals/help-pages.
> 
> Ciao,
>    Oliver
> 
> 
> 
> 
> 
> 
> 
> 
> Zitat von Uwe Ligges <ligges at statistik.tu-dortmund.de>:
> 
>>
>> Oliver Bandel wrote:
>>> Hello,
>>>
>>> can the displayed and/or used precision of numbers be
>>> configured? And if... how?
>>
>> See ?.Machine for the internally used precision.
>> See ?options and ?format/?formatC/?print for the printed precision.
>>
>> Uwe Ligges
>>
>>
>>
>>>
>>> Ciao,
>>>    Oliver
>>>
>>> ______________________________________________
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>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
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