Thank-you for the replies. I would say that the function xtabs() is the simplest method. And thanks for pointing out that a table is also an array, as I clearly wasn't aware of that.
On 2011-10-21, at 19:07, Gabor Grothendieck <ggrothendi...@gmail.com> wrote: > On Fri, Oct 21, 2011 at 7:04 PM, Gabor Grothendieck > <ggrothendi...@gmail.com> wrote: >> On Fri, Oct 21, 2011 at 4:15 PM, Luk Arbuckle <luk.arbuc...@gmail.com> wrote: >>> Consider the following data frame >>> >>> X <- data.frame(Titanic) >>> >>> Does anyone know of an easy way to convert X into a multidimensional >>> array? Example that doesn't work >>> >>> X <- as.array(X, dim=c(4,2,2,2)) >>> >>> To do what I need, X needs to be converted into an array of dimensions >>> c(4,2,2,2) in this case, not a table. >>> >> >> Try this: >> >> xtabs(Freq ~., X) >> > > By the way, you asked for an array rather than a table but a table is an > array: > > is.array(xtabs(Freq ~., X)) # TRUE > > > -- > Statistics & Software Consulting > GKX Group, GKX Associates Inc. > tel: 1-877-GKX-GROUP > email: ggrothendieck at gmail.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.
