To find the first element of an array in R, you can use the indexing notation by specifying the index as 1. Here's an example:
Suppose we have an array called my_array with elements [2, 4, 6, 8]. We can find the first element of this array using the following code:
my_array <- c(2, 4, 6, 8)
first_element <- my_array[1]
print(first_element) # Output: [1] 2
In this example, we first create an array my_array using the c() function, which concatenates the values into a vector-like structure. We then use the indexing notation [1] to access the first element of the array and store it in the variable first_element. Finally, we print the value of first_element using the print() function. The output shows that the first element of my_array is 2.