Try this: matrix(aperm(x, c(1,3,2)), nc = 6)
On Sun, Sep 27, 2009 at 6:33 PM, Daniel Malter <dan...@umd.edu> wrote: > > Hi, I have an array of dimension 6:6:160000. I want to stack the 160000 > slices of the array into a matrix or a data frame of dimension > 6:(6*160000=960000) in order to write it to a csv file. It seems I cannot > get the matrix or data.frame functions to put the values from the array in > the same order as they appear in the array easily, but I am almost sure > there is an easy way to do this. > > #Here is code for a small 6:6:2 array. > > x=rep(rep(1:6,each=6),2) > dim(x)=c(6,6,2) > > x > > #Matrix approach 1: > > matrix(x,nrow=12,ncol=6,byrow=F) > > #Matrix approach 2: > > matrix(x,nrow=12,ncol=6,byrow=T) > > #Data frame approach (cbinds rather than rbinds): > > data.frame(x) > > None of the above works as I would like to. The "correct" approach should > stack the same values all in the same column of the matrix or data frame. I > also could not get "stack" to work correctly and would appreciate your help. > > Daniel > > > > -- > View this message in context: > http://www.nabble.com/array-to-matrix-or-data.frame-tp25638310p25638310.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.
