Programming Example

How to add a new column in the existing Data frame using R language

👁 525 Views

💻 Practical Program

📘 Step by Step Learning

In this question we will add a new column to an existing data frame

Information & Algorithm

In this question we will add a new column to an existing data frame

Here in the existing Data Frame


Student <- data.frame(
RollNo = 1:10,
Marks = c(10, 20, 30, 40, 50, 60, 70, 80, 90, 100), 
PassOrFail = c(F, F, F, F, F, T, T, T, T, T))

In this Data Frame we will add a column StudentName

Program Code

> StudentName <- c("Rumman", "Inza", "Jaman", "Azam", "Samser","Kamran","Roman", "Ali", "Ansar", "Sfik")
> Student$StudentName <- StudentName

Output

<img src="/library/images-tutorials/add-new-column-to-dataframe.png" alt="data frame, r language" class="img-responsive">

> str(Student)
'data.frame':	10 obs. of  4 variables:
 $ RollNo     : int  1 2 3 4 5 6 7 8 9 10
 $ Marks      : num  10 20 30 40 50 60 70 80 90 95
 $ PassOrFail : logi  FALSE FALSE FALSE FALSE FALSE TRUE ...
 $ StudentName: chr  "Rumman" "Inza" "Jaman" "Azam" ...

Explanation

None

How to learn from this program

First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.

Practice suggestion

After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.