Combine three Vectors into a 3×3 Matrix in R Programming

R Programming: Basic Exercise-12 with Solution

Write a R program to create three vectors a,b,c with 3 integers. Combine the three vectors to become a 3×3 matrix where each column represents a vector. Print the content of the matrix.

Sample Solution :

R Programming Code :

# Create a vector 'a' with values 1, 2, and 3
a <- c(1, 2, 3)

# Create a vector 'b' with values 4, 5, and 6
b <- c(4, 5, 6)

# Create a vector 'c' with values 7, 8, and 9
c <- c(7, 8, 9)

# Combine vectors 'a', 'b', and 'c' into a matrix by columns
m <- cbind(a, b, c)

# Print a message indicating that the following output is the content of the matrix
print("Content of the said matrix:")

# Print the matrix 'm'
print(m)

Output:

[1] "Content of the said matrix:"
     a b c
[1,] 1 4 7
[2,] 2 5 8
[3,] 3 6 9                         

Explanation:

• Create three vectors:
• a <- c(1, 2, 3) creates a vector a containing the values 1, 2, 3.
• b <- c(4, 5, 6) creates a vector b containing the values 4, 5, 6.
• c <- c(7, 8, 9) creates a vector c containing the values 7, 8, 9.
• Combine vectors into a matrix:
• m <- cbind(a, b, c) combines the three vectors a, b, and c column-wise to form a 3×3 matrix m.
• Print the matrix:
• print("Content of the said matrix:") prints a label indicating the matrix content.
• print(m) prints the matrix m showing each vector as a column.

R Programming Code Editor:

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