Here we are explaining how to write an R program to change two columns of a data frame to a named vector. Here we are using a built-in function setNames() for this. The setNames() function helps to set the names on an object and returns the object.
The syntax of this function is
setNames(object = nm, nm)
In this R program, we pass the data frame directly to a built-in function. Here we are using the variable Dataf() for holding the data frame which has two columns code and name. Call the function setName() for creating a named vector as setNames(as.character(Dataf $name), Dataf $code). Finally, display the results.
STEP 1: Assign variables Dataf with data frame
STEP 2: Display the original data frame
STEP 3: Call the function setNames as setNames(as.character(Dataf $name), Dataf $code)
STEP 4: Assign variable result with the result of setName function
STEP 5: print the variable result which holds the result
Dataf = data.frame(code = c("A","B","C","D"),
name = c("Apple", "Ball", "Cat", "Duck")
)
print("Original vector:")
print(Dataf )
result = setNames(as.character(Dataf $name), Dataf $code)
print(result)
[1] "Original vector:"
code name
1 A Apple
2 B Ball
3 C Duck
4 D Black
A B C D
"Apple" "Ball" "Cat" "Duck"
