[R] specify the number of decimal numbers
Waclaw.Marcin.Kusnierczyk at idi.ntnu.no
Thu May 14 17:22:32 CEST 2009
James W. MacDonald wrote:
> Wacek Kusnierczyk wrote:
>> (Ted Harding) wrote:
>>> On 14-May-09 12:27:40, Wacek Kusnierczyk wrote:
>>>> ... but remember that sprintf introduces excel bugs into r (i.e.,
>>>> rounding is not done according to the IEC 60559 standard, see
>>>> ns = c(0.05, 0.15)
>>>> round(ns, 1)
>>>> # 0.0 0.2
>>>> as.numeric(sprintf('%.1f', ns))
>>>> # 0.1 0.1
>>> True! And thanks for importing that point into the discussion.
>> said but true, true but sad. i have already raised the issue on this
>> list earlier, but to no response. apparently, this sort of excel bug in
>> r is an intentional feature, so you may not get it improved anytime
>> soon. unless you submit a patch and get it accepted, that is.
> Have you brought this 'issue' up with the Perl people as well?
> perl -e 'print sprintf("%.1f", 0.05) . "\n";'
> perl -e 'print sprintf("%.1f", 0.15) . "\n";'
do they make pompous claims about their software and disregarding claims
about others' as well?
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