To write an R program for taking rows from a given data frame, first, we are using data.frame() function which is a built-in function for creating the data frame. A data frame is a list of equal-length vectors, used to store different types of data like numeric, string, etc in a table format with rows and columns. then we get the needed rows by calling the row numbers of that data frame.
In this R program, we are using variables L, E, A, R, and N for holding different types of vectors. Then call the data.frame() function for creating a data frame. Finally, extract the first two rows by calling like L[1:2,].
STEP 1: Assign variables L,E,A,R,N with vector values
STEP 2: First print the original vector values
STEP 3: Extract the first two rows from a given data frame as L[1:2,]
STEP 4: Assign variable result with the result of data.frame function
STEP 5: print the variable result which holds the result
L = data.frame
(
E = c('Jhon', 'Hari', 'Anu', 'Jack', 'Disna'),
A = c(10, 9.5, 12.2, 11, 8),
R = c(2, 1, 2, 4, 1),
N = c('yes', 'no', 'yes', 'no', 'no')
)
print("Original dataframe:")
print(L)
print("Extract first two rows:")
result = L[1:2,]
print(result)
[1] "Original dataframe:"
name score attempts qualify
1 John 10 2 yes
2 Hari 9.5 1 no
3 Anu 12.2 2 yes
4 Jack 11 4 no
5 Disna 8 1 no
[1] "Extract first two rows:"
name score attempts qualify
1 John 10 2 yes
2 Hari 9.5 1 no
