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
______________________________________________
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and provide commented, minimal, self-contained, reproducible code.
