Returns the number of rows of the data matrix

Returns the number of rows of the data matrix

Usage

# S4 method for class 'LazyMatrix'
nrow(x)

Arguments

x

A LazyMatrix object.

Value

an integer of length 1 or NULL.

Examples

mat_a <- base::matrix(rep(1, 6), nrow=2, ncol=3)
lazy_a <- LazyMatrix(mat_a, "sd", "mean")
nrow(lazy_a)
#> [1] 2