Converting Numerical Matrix to List of Strings
one way is the following:
mat <- matrix(sample(0:3, 12, TRUE), 4, 3)
strg <- c("a", "c", "g", "t")
out <- strg[mat + 1]
dim(out) <- dim(mat)
apply(out, 1, paste, collapse = "")
I hope it helps.
Best,
Dimitris
Gundala Viswanath wrote:
Hi all, Given a matrix:
mat
[,1] [,2] [,3]
[1,] 0 0 0
[2,] 3 3 3
[3,] 1 1 1
[4,] 2 1 1
How can I convert it to a list of strings:
desired_output
[1] "aaa" "ttt" "ccc" "gcc" In principle: 1. Number of Column in matrix = length of string (= 3) 2. Number of Row in matrix = length of vector ( = 4). 3. Character "a" encode as "0", "c" -> "1", "g" -> "2", "t" -> "3" Length of strings are assumed to be uniform within the vector, and it can be greater than 3 (up to 40 characters). - Gundala Viswanath Jakarta - Indonesia
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Dimitris Rizopoulos Assistant Professor Department of Biostatistics Erasmus Medical Center Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands Tel: +31/(0)10/7043478 Fax: +31/(0)10/7043014