Dear all, I have a systematic and spatial organized matrix like this: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 in which every number is a species. I would create a moving overlapping window to resample, at different scale, my plants species data matrix with every possible combination. In short, I would obtain an output matrix like this: resample species 1 1 1 11 1 2 1 12 2 2 2 12 2 3 2 13 3 3 3 13 3 4 3 14 etc can anybody help? Cheers -- View this message in context: http://r.789695.n4.nabble.com/overlapping-moving-windows-tp3264076p3264076.html Sent from the R help mailing list archive at Nabble.com.