Try this... Perhaps this will help you do what you want. The key idea is to use which() with option arr.ind = TRUE.
arr <- array(rnorm(27),c(3,3,3)) dimarr <- dim(arr) tmparr <- array(1:prod(dimarr),dimarr) sapply(c(3),function(x,tmparr) which(tmparr==x,T),tmparr=tmparr) sapply(c(3,17,13,5),function(x,tmparr) which(tmparr==x,T),tmparr=tmparr) Jerome On July 30, 2003 01:42 pm, Buchsbaum, Brad (NIH/NIMH) wrote: > Hi, > > Suppose I have a multidimensional array: > > tmp <- array(1:8, c(2,2,2)) > > is there a function out there that, given a one-dimensional array index, > will > return the separate indices for each array dimension? > > for instance, tmp[8] is equivalent to tmp[2,2,2]. I'd like to derive the > vector (2,2,2) > from the index 8. > > thanks, > > Brad Buchsbaum > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
