thanks all!
On Thu, Jul 3, 2014 at 12:38 PM, Peter Langfelder < peter.langfel...@gmail.com> wrote: > Precision, precision, precision... > > > z[2]-0.15 > [1] 2.775558e-17 > > My solution: > > > z <- signif(seq(.05,.85,by=.1), 5) > > z[2] - 0.15 > [1] 0 > > z[2]==0.15 > [1] TRUE > > Peter > > On Thu, Jul 3, 2014 at 11:28 AM, Matthew Keller <mckellerc...@gmail.com> > wrote: > > Hi all, > > > > A bit stumped here. > > > > z <- seq(.05,.85,by=.1) > > z==.05 #good > > [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > > > > z==.15 #huh???? > > [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > > > > More generally: > >> sum(z==.25) > > [1] 1 > >> sum(z==.35) > > [1] 0 > >> sum(z==.45) > > [1] 1 > >> sum(z==.55) > > [1] 1 > >> sum(z==.65) > > [1] 0 > >> sum(z==.75) > > [1] 0 > >> sum(z==.85) > > [1] 1 > > > > Does anyone have any ideas what is going on here? > > > >> R.Version() > > $platform > > [1] "x86_64-apple-darwin9.8.0" > > > > $arch > > [1] "x86_64" > > > > $os > > [1] "darwin9.8.0" > > > > $system > > [1] "x86_64, darwin9.8.0" > > > > $status > > [1] "" > > > > $major > > [1] "2" > > > > $minor > > [1] "13.1" > > > > $year > > [1] "2011" > > > > $month > > [1] "07" > > > > $day > > [1] "08" > > > > $`svn rev` > > [1] "56322" > > > > $language > > [1] "R" > > > > $version.string > > [1] "R version 2.13.1 (2011-07-08)" > > > > -- > > Matthew C Keller > > Asst. Professor of Psychology > > University of Colorado at Boulder > > www.matthewckeller.com > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > 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. > -- Matthew C Keller Asst. Professor of Psychology University of Colorado at Boulder www.matthewckeller.com [[alternative HTML version deleted]] ______________________________________________ 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.
