Alternatively, see rowQuantiles() in the matrixStats package.
/Henrik On Wed, Oct 6, 2010 at 10:34 PM, Joshua Wiley <jwiley.ps...@gmail.com> wrote: > Hi, > > This should do it, for details, see ?apply > > a <- matrix(rnorm(10000),100,100) > t(apply(a, 1, quantile, probs = c(.3, .5))) > > Basically you apply() the quantile function to each row (the 1, 2 > would indicate columns) in the object 'a'. > > HTH, > > Josh > > On Wed, Oct 6, 2010 at 10:20 PM, Takos <zyou...@gmail.com> wrote: >> >> Simple Question >> >> I have 100x100 matrix and I want to calculte each row's 30,50% quantile >> >> ex) >> >> a=matrix(rnorm(10000),100,100) >> quantile(a[1,],c(0.3,0.5)) >> quantile(a[2,],c(0.3,0.5)) >> . >> . >> . >> . >> >> >> I want get results at once. >> >> so I try quantile(a[1:100,],c(0.3,0.5)) but I can get what I exactly want. >> >> How can I calculte that? >> >> >> >> >> >> -- >> View this message in context: >> http://r.789695.n4.nabble.com/Quantile-question-tp2966195p2966195.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. >> > > > > -- > Joshua Wiley > Ph.D. Student, Health Psychology > University of California, Los Angeles > http://www.joshuawiley.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.
