In this tutorial, we will look at how to convert a numeric type value (or collection) to character type in R with the help of some examples.
How to convert numeric type to character in R?
You can use the
as.character() function in R to convert numeric type to character type in R. Pass the field (for example, a vector) as an argument to the function. The following is the syntax –
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If you pass a vector to the above function, it returns a vector with each value converted to the character type. You can also use this function on dataframe columns in R (see the examples below).
Let’s now look at some examples of using the
as.character() function in R.
Convert numeric type vector to character type vector
Let’s create a vector with numbers and then apply the
as.character() function to convert them to character type values.
# create a vector vec <- c(1, 2, 3, 4) # convert to character type vec <- as.character(vec) # display the vector print(vec) # display vector's type print(class(vec))
 "1" "2" "3" "4"  "character"
You can see that the values in the resulting vector are of character type.
Convert numeric type dataframe column to character type
You can also use the
as.character() function to change the data type of a dataframe column in R to the character type.
Let’s look at an example.
First, we will create a dataframe with the height and weight information of some students in a university.
# create a data frame df <- data.frame( "Name"= c("Tim", "Hasan", "Vlad", "Maria"), "Height"= c(168, 174, 162, 158), "Weight"= c(73, 81, 65, 55) ) # display the dataframe print(df)
Name Height Weight 1 Tim 168 73 2 Hasan 174 81 3 Vlad 162 65 4 Maria 158 55
You can see that the “Height” and “Weight” columns in the above dataframe are of numeric type. Let’s change the type of the “Height” column to the character type using the
# convert "Height" column to character type df$Height <- as.character(df$Height) # display "Height" column's type print(class(df$Height))
You can see that the “Height” column is now of character data type.
You might also be interested in –
- Convert Character to Numeric in R (With Examples)
- R – Count Occurrences of a Value in a Vector
- Check if an Element is present in an R Vector
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