Re: [R] selective subsetting of a correlation matrix

On 12/04/2009 02:24 PM, Romain Francois wrote: On 12/04/2009 02:18 PM, Lee William wrote: Dear All, I have a correlation matrix say 'M' (4000x4000) for 4000 genes and I want to subset it to 'N' (190x190) for 190 genes. The list of those 190 genes are in variable 't'. So the idea is to read the

Re: [R] selective subsetting of a correlation matrix

Will something like this work for you: > x <- matrix(1:100,10) > dimnames(x) <- list(letters[1:10], LETTERS[1:10]) > x A B C D E F G H I J a 1 11 21 31 41 51 61 71 81 91 b 2 12 22 32 42 52 62 72 82 92 c 3 13 23 33 43 53 63 73 83 93 d 4 14 24 34 44 54 64 74 84 94 e 5 15 25 35

Re: [R] selective subsetting of a correlation matrix

On 12/04/2009 02:18 PM, Lee William wrote: Dear All, I have a correlation matrix say 'M' (4000x4000) for 4000 genes and I want to subset it to 'N' (190x190) for 190 genes. The list of those 190 genes are in variable 't'. So the idea is to read the names of genes from variable 't' and subset the

[R] selective subsetting of a correlation matrix

Dear All, I have a correlation matrix say 'M' (4000x4000) for 4000 genes and I want to subset it to 'N' (190x190) for 190 genes. The list of those 190 genes are in variable 't'. So the idea is to read the names of genes from variable 't' and subset the matrix M accordingly. Any thoughts are welcome