Extract every nth element of a given Vector in R

R Programming: Vector Exercise-17 with Solution

Write a R program to extract every n^th element of a given vector.

Sample Solution :

R Programming Code :

# Create a vector containing numbers from 1 to 100
v <- 1:100

# Print the original vector
print("Original vector:")
print(v)

# Print a message indicating the operation being performed
print("After extracting every 5th element of the said vector:")

# Extract every 5th element from the vector
n <- v[seq(1, length(v), 5)]

# Print the result
print(n)

Output:

[1] "Original vector:"
  [1]   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18
 [19]  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36
 [37]  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54
 [55]  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72
 [73]  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90
 [91]  91  92  93  94  95  96  97  98  99 100
[1] "After extracting every 5th element of the said vector:"
 [1]  1  6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96                         

Explanation:

• v <- 1:100:
• Creates a vector v with elements from 1 to 100.
• print("Original vector:"):
• Prints the message "Original vector:" to indicate the following output.
• print(v):
• Prints the contents of the vector v.
• print("After extracting every 5th element of the said vector:"):
• Prints the message "After extracting every 5th element of the said vector:" to indicate the following output.
• n <- v[seq(1, length(v), 5)]:
• Extracts every 5th element from the vector v. seq(1, length(v), 5) generates a sequence of indices starting from 1 to the length of v, with a step of 5. v[...] selects these indices from v.
• print(n):
• Prints the resulting vector n, which contains every 5th element of the original vector v.

R Programming Code Editor:

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