[R] merging two maxtrices
Bill.Venables at csiro.au
Bill.Venables at csiro.au
Sun Sep 5 09:21:12 CEST 2010
Is this all you want?
> j <- matrix(nrow=10,ncol=10)
> k <- matrix(seq(1:50), ncol=10)
> row.names(k) <- seq(2,10,by=2)
>
> row.names(j) <- 1:10
> j[row.names(k), ] <- k
>
> j
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
1 NA NA NA NA NA NA NA NA NA NA
2 1 6 11 16 21 26 31 36 41 46
3 NA NA NA NA NA NA NA NA NA NA
4 2 7 12 17 22 27 32 37 42 47
5 NA NA NA NA NA NA NA NA NA NA
6 3 8 13 18 23 28 33 38 43 48
7 NA NA NA NA NA NA NA NA NA NA
8 4 9 14 19 24 29 34 39 44 49
9 NA NA NA NA NA NA NA NA NA NA
10 5 10 15 20 25 30 35 40 45 50
>
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of steven mosher
Sent: Sunday, 5 September 2010 5:10 PM
To: r-help
Subject: [R] merging two maxtrices
j<-matrix(nrow=10,ncol=10)
k<-matrix(seq(1:50), ncol=10)
row.names(k) <- seq(2,10,by=2)
j
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] NA NA NA NA NA NA NA NA NA NA
[2,] NA NA NA NA NA NA NA NA NA NA
[3,] NA NA NA NA NA NA NA NA NA NA
[4,] NA NA NA NA NA NA NA NA NA NA
[5,] NA NA NA NA NA NA NA NA NA NA
[6,] NA NA NA NA NA NA NA NA NA NA
[7,] NA NA NA NA NA NA NA NA NA NA
[8,] NA NA NA NA NA NA NA NA NA NA
[9,] NA NA NA NA NA NA NA NA NA NA
[10,] NA NA NA NA NA NA NA NA NA NA
k
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
2 1 6 11 16 21 26 31 36 41 46
4 2 7 12 17 22 27 32 37 42 47
6 3 8 13 18 23 28 33 38 43 48
8 4 9 14 19 24 29 34 39 44 49
10 5 10 15 20 25 30 35 40 45 50
is there a simple way to merge j and k By the row.names in k
so that row named '2' is placed in the 2nd row of j.. and so forth through
4,6,8,10
the actual example has a sparse k.. not evenly spaced
so this should also be mergeable
row.names(k) <- c(1,2,5,6,9)
k
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
1 1 6 11 16 21 26 31 36 41 46
2 2 7 12 17 22 27 32 37 42 47
5 3 8 13 18 23 28 33 38 43 48
6 4 9 14 19 24 29 34 39 44 49
9 5 10 15 20 25 30 35 40 45 50
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