dvmisc (version 1.1.4)

mean_i: Mean of Integer Values

Description

Written in C++, this function runs faster than mean for large integer vectors/matrices.

Usage

mean_i(x)

Arguments

x

Integer vector or matrix.

Value

Numeric value.

Examples

# NOT RUN {
# For very large integer objects, sum_i is faster than sum
x <- rpois(100000, lambda = 5)
mean(x) == mean_i(x)
benchmark(mean(x), mean_i(x), replications = 1000)

# For smaller integer objects, sum_i is slower than sum 
x <- rpois(1000, lambda = 5)
mean(x) == mean_i(x)
benchmark(mean(x), mean_i(x), replications = 1000)

# }