In theory, I am generating from group 5 groups of random numbers, each group has 3 samples.
Isn't apply() the replacement of loops? On Fri, Feb 24, 2017 at 8:23 PM, Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote: > What is wrong with > > dat <- matrix(rnorm(15), nrow=5, ncol = 3) > > ? > > And what is this "no loop drama" you refer to? I use loops frequently to > loop around large memory gobbling chunks of code. > > -- > Sent from my phone. Please excuse my brevity. > > On February 24, 2017 5:02:46 PM PST, C W <tmrs...@gmail.com> wrote: > >Dear R, > > > >I wanted to simulate a 5 by 3 matrix which fills up by either rows or > >columns? > > > >I started with the following filling the matrix by rows, > > > >dat <- matrix(NA, nrow=5, ncol = 3) > > > >for(i in 1:5){ > > > > dat[i, ] <- rnorm(3) > > > >} > > > >But, R is known for no loop drama. Any suggestions? > > > >Thanks! > > > > [[alternative HTML version deleted]] > > > >______________________________________________ > >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > >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. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.