[R] Rounding like in finances
Hello, I need to have a kaufmaennisches Runden function. Is there already something like that? It means: rounding up the 5, instead of rounding it down. So, 245.455 would give 245.46 I found no option for this. Maybe there is a package for it? Oliver __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Rounding like in finances
round(245.455, 2) ? On Mon, Feb 22, 2010 at 11:06 AM, Oliver oli...@first.in-berlin.de wrote: Hello, I need to have a kaufmaennisches Runden function. Is there already something like that? It means: rounding up the 5, instead of rounding it down. So, 245.455 would give 245.46 I found no option for this. Maybe there is a package for it? Oliver __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Rounding like in finances
Oh strange... round(108.275 , 2) [1] 108.28 round(208.275 , 2) [1] 208.28 round(308.275 , 2) [1] 308.27 looks not like what one should expect... R version 2.9.2 (2009-08-24) Ciao, Oliver __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Rounding like in finances
On 22/02/2010 9:06 AM, Oliver wrote: Hello, I need to have a kaufmaennisches Runden function. Is there already something like that? It means: rounding up the 5, instead of rounding it down. So, 245.455 would give 245.46 I found no option for this. Maybe there is a package for it? This is a little tricky, because 245.455 is not a representable number in base R. If x is represented as x+epsilon, it will tend to round up, if it is x-epsilon, it will tend to round down. (I say tend to because R tries to do banker's rounding, and the math routines attempt to do exact calculations even when they are not really possible, so it is hard to predict exactly what will happen for a particular number.) There are packages for handling rational numbers that could handle it exactly; I don't know how flexible they are about rounding. Duncan Murdoch __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Rounding like in finances
same result with R2.10.1 on Windows... Le 2/22/2010 15:34, Oliver a écrit : Oh strange... round(108.275 , 2) [1] 108.28 round(208.275 , 2) [1] 208.28 round(308.275 , 2) [1] 308.27 looks not like what one should expect... R version 2.9.2 (2009-08-24) Ciao, Oliver __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Ivan CALANDRA PhD Student University of Hamburg Biozentrum Grindel und Zoologisches Institut und Museum Martin-Luther-King-Platz 3 D-20146 Hamburg, GERMANY +49(0)40 42838 6231 ivan.calan...@uni-hamburg.de ** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Rounding like in finances
Hello, which packages are you talking about? And... are thoise packages using integer-based calculations? __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Rounding like in finances
On 22/02/2010 9:57 AM, Oliver wrote: Hello, which packages are you talking about? And... are thoise packages using integer-based calculations? I don't use this, but the ones I'd look in would be: MASS (function rational()) rcdd Rmpfr You can use RSiteSearch(rational) to look for more. Duncan Murdoch __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Rounding like in finances
Duncan Murdoch murdoch at stats.uwo.ca writes: [...] MASS (function rational()) rcdd Rmpfr [...] OK, I will look for those packages. Maybe they will help. Thank you. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
