How To Access Items in Vector?
We can use index notation with square brackets as vector[index] to access items in vector. The index should be a single value that specifies the position of the item, or a vector of positions. This index starts at 1 and increments by 1 (1, 2, 3, and so on) until the end of vector. The return value of expression is a vector.
Syntax
x[index] |
Not only we can access single item using Index, we can also access multiple items in vector using indices by passing indices as vector inside square brackets.
Example:
m <- c(51, 100, 105, 260, 125, 330)
#accessing single item
result1 <- m[2]
cat("Single Item : ", result)
#accessing multiple items
result <- m[c(2, 3, 5)]
cat("Multiple Items : ", result)
#accessing out of range items
result <- m[10]
cat("Out range Item : ", result)
#output:
Single Item : 100
Multiple Items : 100 105 125
Out range Item : NAConclutions
Accessing items in vector is done using index notation with square brackets that specifies the position of the item.
