[R] Converting Numerical Matrix to List of Strings

[Gundala Viswanath]

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