Undoubtedly this question has been asked before, I just can't seem to find the combination of search terms to produce it. I'm trying to resize a dataset that is pulled into R using read.table. However, I think the same problem can be produced using matrix:
x<-matrix(1:64,8) x # [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] #[1,] 1 9 17 25 33 41 49 57 #[2,] 2 10 18 26 34 42 50 58 #[3,] 3 11 19 27 35 43 51 59 #[4,] 4 12 20 28 36 44 52 60 #[5,] 5 13 21 29 37 45 53 61 #[6,] 6 14 22 30 38 46 54 62 #[7,] 7 15 23 31 39 47 55 63 #[8,] 8 16 24 32 40 48 56 64 The true order of data in the larger problem I'm working with is actually transposed, like so: x<-t(x) x # [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] #[1,] 1 2 3 4 5 6 7 8 #[2,] 9 10 11 12 13 14 15 16 #[3,] 17 18 19 20 21 22 23 24 #[4,] 25 26 27 28 29 30 31 32 #[5,] 33 34 35 36 37 38 39 40 #[6,] 41 42 43 44 45 46 47 48 #[7,] 49 50 51 52 53 54 55 56 #[8,] 57 58 59 60 61 62 63 64 I'm trying to resize the data (in this example, a matrix) to say a 16 x 4 matrix while preserving the consecutive order of the individual elements in a left-to-right top-to-bottom fashion. The example below is wrong because the first row should be "1 2 3 4", how can I make this happen? It would also be nice to make a 4 x 16 matrix where the first row contains the values of x[1,1:8] followed by x[2,1:8]. I'm guessing there is a 1 liner of R code for this type of thing so I don't have to resort to nested for loops? y<-matrix(x,nrow=16,ncol=4) y # [,1] [,2] [,3] [,4] # [1,] 1 3 5 7 # [2,] 9 11 13 15 # [3,] 17 19 21 23 # [4,] 25 27 29 31 # [5,] 33 35 37 39 # [6,] 41 43 45 47 # [7,] 49 51 53 55 # [8,] 57 59 61 63 # [9,] 2 4 6 8 #[10,] 10 12 14 16 #[11,] 18 20 22 24 #[12,] 26 28 30 32 #[13,] 34 36 38 40 #[14,] 42 44 46 48 #[15,] 50 52 54 56 #[16,] 58 60 62 64 -- View this message in context: http://r.789695.n4.nabble.com/resizing-data-tp4656653.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.
