Create a List in R with Vectors, Matrices, and Functions

R Programming: Basic Exercise-19 with Solution

Write a R program to create a list of elements using vectors, matrices and a functions. Print the content of the list.

Sample Solution :

R Programming Code :

# Create a list with various elements:
# - A numeric vector
# - The built-in vector of month abbreviations
# - A 2x2 matrix with specified values
# - The 'asin' function
l = list(
  c(1, 2, 2, 5, 7, 12),  # Numeric vector
  month.abb,              # Vector of month abbreviations
  matrix(c(3, -8, 1, -3), nrow = 2),  # 2x2 matrix
  asin                    # 'asin' function
)

# Print a message indicating the content of the list
print("Content of the list:")

# Print the content of the list
print(l)

Output:

[1] "Content of the list:"
[[1]]
[1]  1  2  2  5  7 12

[[2]]
 [1] "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"

[[3]]
     [,1] [,2]
[1,]    3    1
[2,]   -8   -3

[[4]]
function (x)  .Primitive("asin")                         

Explanation:

• Create a List:
• l = list(...) initializes a new list l with several elements.
• First Element:
• c(1, 2, 2, 5, 7, 12) is a numeric vector.
• Second Element:
• month.abb is a built-in vector containing abbreviated month names ("Jan", "Feb", etc.).
• Third Element:
• matrix(c(3, -8, 1, -3), nrow = 2) creates a 2x2 matrix with the specified values.
• Fourth Element:
• asin is the built-in R function for computing the arcsine.
• Print List Content:
• print("Content of the list:") prints a label for the list.
• print(l) displays the contents of the list l.

R Programming Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a R program to create an array with three columns, three rows, and two "tables", taking two vectors as input to the array. Print the array.
Next: Write a R program to draw an empty plot and an empty plot specify the axes limits of the graphic.