Dear R users, I have a question about matrix manipulation with its rows.
Plz see the simple example below sample <- list(matrix(1:6, nr=2,nc=3), matrix(7:12, nr=2,nc=3), matrix(13:18,nr=2,nc=3)) > sample [[1]] [,1] [,2] [,3] [1,] 1 3 5 [2,] 2 4 6 [[2]] [,1] [,2] [,3] [1,] 7 9 11 [2,] 8 10 12 [[3]] [,1] [,2] [,3] [1,] 13 15 17 [2,] 14 16 18 With this list, I'd like to create this below [[1]] [,1] [,2] [,3] [,4] [,5] [,6] [1,] 1 3 5 0 0 0 [2,] 0 0 0 2 4 6 [[2]] [,1] [,2] [,3] [,4] [,5] [,6] [1,] 7 9 11 0 0 0 [2,] 0 0 0 8 10 12 [[3]] [,1] [,2] [,3] [,4] [,5] [,6] [1,] 13 15 17 0 0 0 [2,] 0 0 0 14 16 18 Any suggestion will be greatly appreciated. Regards, Kathryn Lord [[alternative HTML version deleted]] ______________________________________________ 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.