Milton Cezar
2006-Sep-27 02:30 UTC
[R] matrix with additional upper, botton, left and right cells
Dear R Gurus, I have a matrix dim(1000x1000) and I need create a second matrix with dim(1002x1002) and insert my first matrix at position col=2,line=2. Please, see an example below: 0050055050 5550000000 5000505005 5005000500 0055550555 and I need 333333333333 300500550503 355500000003 350005050053 350050005003 300555505553 333333333333 Thanks a lot, miltinho __________________________________________________ [[alternative HTML version deleted]]
jim holtman
2006-Sep-27 03:28 UTC
[R] matrix with additional upper, botton, left and right cells
How about something like this:> x <- matrix(1:100,10) > x.1 <- array(-3, dim=c(12,12)) > x.1[2:11, 2:11] <- x > x.1[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [1,] -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 [2,] -3 1 11 21 31 41 51 61 71 81 91 -3 [3,] -3 2 12 22 32 42 52 62 72 82 92 -3 [4,] -3 3 13 23 33 43 53 63 73 83 93 -3 [5,] -3 4 14 24 34 44 54 64 74 84 94 -3 [6,] -3 5 15 25 35 45 55 65 75 85 95 -3 [7,] -3 6 16 26 36 46 56 66 76 86 96 -3 [8,] -3 7 17 27 37 47 57 67 77 87 97 -3 [9,] -3 8 18 28 38 48 58 68 78 88 98 -3 [10,] -3 9 19 29 39 49 59 69 79 89 99 -3 [11,] -3 10 20 30 40 50 60 70 80 90 100 -3 [12,] -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3>On 9/26/06, Milton Cezar <miltinho_astronauta at yahoo.com.br> wrote:> Dear R Gurus, > > I have a matrix dim(1000x1000) and I need create a second matrix with dim(1002x1002) and insert my first matrix at position col=2,line=2. Please, see an example below: > > 0050055050 > 5550000000 > 5000505005 > 5005000500 > 0055550555 > > and I need > > 333333333333 > 300500550503 > 355500000003 > 350005050053 > 350050005003 > 300555505553 > 333333333333 > > Thanks a lot, > > miltinho > > __________________________________________________ > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at stat.math.ethz.ch 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. >-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve?