make_random: Add new column with random numbers

In NorwegianVeterinaryInstitute/OKplan: Tools to facilitate the Planning of the annual Surveillance Programmes

Add new column with random numbers

Description

Adds new column with random numbers. The function is built to be able to use it in piping.

Usage

make_random(data, colname = "random", seed = -1, init_seed = FALSE)

Arguments

data	[data.frame] Data to which a column with random number should be added.
colname	[character(1)] The name of the new column with the random number. Defaults to "random".
seed	[numeric(1)] The initializing seed. Defaults to -1, see set.seed.
init_seed	[logical(1)] Should the seed be initialized. Defaults to FALSE.

Details

To make reproducible random numbers the seed can be initialized with a specific value. The first time the seed is used, set init_seed = TRUE. Thereafter, use init_seed = FALSE if more random numbers are generated in the session to avoid overlapping random numbers.

Value

data.frame with a new column with random numbers.

Author(s)

Petter Hopp [e-mail]

Examples

## Not run: 
# Add column with random variables
x <- as.data.frame(c(1:10))
seed <- 12345

# Initialize with seed first time used
x <- make_random(x, seed = seed, init_seed = TRUE)

# Do not initialize the seed thereafter to avoid overlapping
x <- make_random(x, seed = seed, init_seed = FALSE)

# If you initialize again you get overlapping seeds
x <- make_random(x, seed = seed, init_seed = TRUE)

## End(Not run)

NorwegianVeterinaryInstitute/OKplan documentation built on Dec. 20, 2024, 10:41 a.m.