R has no built-in string data type. Instead, it has a character, and you can use the is.character() function to check. Type conversions in R work as you would expect. For example, adding the character string to a numeric vector converts all the vector items to the character.
r toString
The toString() is a built-in R function that produces a single character string describing an R object. The toString() function takes an R object and returns a character vector of length 1. The toString() function converts an object to a character string. First, it converts an object to a character type, and then if you have passed the second argument, it will concatenate with it.
Syntax
toString(x, width = NULL, ...)
Parameters
x: It is an R object.
width: It is a maximum field width. Values of NULL or 0 indicate no maximum. The minimum value accepted is 6, and smaller values are taken as 6.
Return Value
The toString() function returns a character vector of length 1.
Example
Let’s define a double vector and then use the toString() function to convert it into a string. In the R sense, a character.
dt <- c(1, 2, 3)
typeof(dt)
ds <- toString(dt)
typeof(ds)
Output
[1] "double"
[1] "character"
As you can see that the toString() function converts a double to a string.
Converting Matrix to String in R
To create a matrix in R, use the matrix() function. Then, let’s apply a toString() function to the matrix and convert the matrix into a string.
mt <- matrix(c(1:9), 3, 3)
typeof(mt)
mt
ds <- toString(mt)
typeof(ds)
ds
Output
[1] "integer"
[,1] [,2] [,3]
[1,] 1 4 7
[2,] 2 5 8
[3,] 3 6 9
[1] "character"
[1] "1, 2, 3, 4, 5, 6, 7, 8, 9"
That is it for the R toString() method.
See also

Krunal Lathiya is an Information Technology Engineer by education and web developer by profession. He has worked with many back-end platforms, including Node.js, PHP, and Python. In addition, Krunal has excellent knowledge of Data Science and Machine Learning, and he is an expert in R Language. Krunal has written many programming blogs, which showcases his vast expertise in this field.