Here is a different approach that may work for you, or give you a starting place:
> library(MASS) > fractions(60/(220*6)) [1] 1/22 Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of capybara! > Sent: Friday, April 23, 2010 7:49 AM > To: r-help@r-project.org > Subject: [R] cancelling in fraction > > > Dear All, > > I have a fraction of 60./(220.*6.), which equals 1./22. > My question is how to cancel the fraction so I actually get 1/22 > (actually I > just need the factor 22) using R. I tried it with prime factor > decomposition > from the package "schoolmath": > > > require("schoolmath") > Loading required package: schoolmath > > nom <- prime.factor(60) > > nom > [1] 2 2 3 5 > > denom <- prime.factor(220 * 6) > > denom > [1] 2 2 2 3 5 11 > > So far so good, now I just need to take all elements which are in nom > out of > denom (if possible). > For this I use the package "sets", its function set_complement should > exactly do that, but: > > > require(sets) > > set_complement(nom, denom) > {2, 2, 11} > > It gives me {2,2,11} and 2 * 2 * 11 is 44 and not 22. > What am I doing wrong? Can anybody help me? > Is there maybe a more elegant way to cancel a fraction than by prime > factor > decomposition? > > Many thanks in advance, > > Hannes > > > -- > View this message in context: http://r.789695.n4.nabble.com/cancelling- > in-fraction-tp2062218p2062218.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. ______________________________________________ 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.
