Get the number of elements

Description

Gets the number of elements in an object.

Usage

n_elements(x)

Arguments

Value

A non-negative integer of the number of elements.

Note

For atomic objects, the number of elements is the product of the dimensions, as calculated by DIM. For recursive objects, the number of elements is the sum of the number of elements of each of their atomic components.

See Also

DIM

Examples

n_elements(1:10)
n_elements(NULL)
n_elements(data.frame(x = 1:5, y = rnorm(5)))
n_elements(list(1:5, list(1:3, list(1:7))))
n_elements(var) # depends upon the length of the body