How to get First N Items from a Vector in R

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How to get First N Items from a Vector in R ?

Answer

To get the first N items from a vector in R, you can use array indexing.

✐ Examples

1 Get First N Items from Vector

In this example,

First, you define a vector containing the elements from which you want to retrieve the first N items.
Next, you specify the index range for the first N items. In R, array indexing starts from 1, so to select the first N items, you use the index range from 1 to N.
Finally, you retrieve the elements using the specified index range.

R Program

# Define a vector containing elements
vector <- c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

# Specify the number of items to retrieve (N)
N <- 5

# Retrieve the first N items from the vector
first_N_items <- vector[1:N]

# Print the first N items
print(first_N_items)

Output

[1] 1 2 3 4 5

2 Get First Three Items from Character Vector

In this example,

Define a character vector containing strings.
Specify the index range from 1 to 3 to retrieve the first three items from the character vector.
Retrieve the first three items using array indexing.

R Program

# Define a character vector
char_vector <- c("apple", "banana", "orange", "grape", "kiwi")

# Retrieve the first three items from the character vector
first_three_items <- char_vector[1:3]

# Print the first three items
print(first_three_items)

Output

[1] "apple"  "banana" "orange"

Summary

In this tutorial, we learned How to get First N Items from a Vector in R language with well detailed examples.

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How to get First N Items from a Vector in R

How to get First N Items from a Vector in R ?

Answer

✐ Examples

1 Get First N Items from Vector

R Program

Output

2 Get First Three Items from Character Vector

R Program

Output

Summary

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