How to get Last Item in a Vector in R


How to get Last Item in a Vector in R ?

Answer

To get the last item in a vector in R, you can use indexing with the length function to determine the position of the last element.



✐ Examples

1 Get Last Item in a Numeric Vector

In this example,

  1. First, we create a numeric vector named vec with a series of numeric values.
  2. We then use the length function to determine the total number of elements in the vector vec.
  3. The length function returns an integer value representing the number of elements in the vector.
  4. Next, we use this length value to index the last element of the vector. In R, you can access the last element of a vector by using vec[length(vec)].
  5. Finally, we print the last item to the console using the print function.

R Program

vec <- c(10, 20, 30, 40, 50)
last_item <- vec[length(vec)]
print(last_item)

Output

[1] 50

2 Get Last Item in a Character Vector

In this example,

  1. First, we create a character vector named char_vec with a series of string values.
  2. We then use the length function to determine the total number of elements in the vector char_vec.
  3. The length function returns an integer value representing the number of elements in the vector.
  4. Next, we use this length value to index the last element of the vector. In R, you can access the last element of a vector by using char_vec[length(char_vec)].
  5. Finally, we print the last item to the console using the print function.

R Program

char_vec <- c("apple", "banana", "cherry", "date", "elderberry")
last_item <- char_vec[length(char_vec)]
print(last_item)

Output

[1] "elderberry"

Summary

In this tutorial, we learned How to get Last Item in a Vector in R language with well detailed examples.




More R Vectors Tutorials

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  2. How to Initialize a Vector in R ?
  3. How to Get Length of a Vector in R ?
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  5. How to create a Vector of Numbers from 1 to N in R ?
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  8. How to create a Vector of Empty Vectors in R ?
  9. How to Access Items in a Vector in R ?
  10. How to get Item in a Vector at a Specific Index in R ?
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  12. How to get Last Item in a Vector in R ?
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  27. How to Sort a Vector in Descending Order in R ?
  28. How to create a Two Dimensional Vector in R ?
  29. How to Iterate over a Two Dimensional Vector in R ?
  30. How to create a Three Dimensional Vector in R ?
  31. How to Copy a Vector in R ?
  32. How to Split a Vector in R ?
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  35. How to Insert an Item at Specific Index in a Vector in R ?
  36. How to Append a Vector to another Vector in R ?
  37. How to Concatenate Two Vectors in R ?
  38. How to check if Two Vectors are Equal in R ?
  39. How to check if Two Vectors have Same Items (Regardless of Order) in R ?
  40. How to Convert a Vector of Integers to a Vector of Strings in R ?
  41. How to Convert a Vector of Strings to a Vector of Integers in R ?
  42. How to Convert a Vector of Floats to a Vector of Strings in R ?
  43. How to Convert a Vector of Strings to a Vector of Floats in R ?
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  46. How to Slice a Vector in R ?
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