rand_walk_helper: Random Walk Helper

In RandomWalker: Generate Random Walks Compatible with the 'tidyverse'

Random Walk Helper

Description

A function to help build random walks by mutating a data frame.

Usage

rand_walk_helper(.data, .value)

Arguments

.data	The data frame to mutate.
.value	The .initial_value to use. This is passed from the random walk function being called by the end user.

Details

A function to help build random walks by mutating a data frame. This mutation adds the following columns to the data frame: cum_sum, cum_prod, cum_min, cum_max, and cum_mean. The function is used internally by certain functions that generate random walks.

Value

A modified data frame/tibble with the following columns added:

• cum_sum: Cumulative sum of y.

• cum_prod: Cumulative product of y.

• cum_min: Cumulative minimum of y.

• cum_max: Cumulative maximum of y.

• cum_mean: Cumulative mean of y.

Author(s)

Steven P. Sanderson II, MPH

See Also

Other Utility Functions: confidence_interval(), convert_snake_to_title_case(), generate_caption(), get_attributes(), rand_walk_column_names(), running_quantile(), std_cum_max_augment(), std_cum_mean_augment(), std_cum_min_augment(), std_cum_prod_augment(), std_cum_sum_augment(), subset_walks()

Examples

df <- data.frame(
  walk_number = factor(rep(1L:25L, each = 30L)),
  x = rep(1L:30L, 25L),
  y = rnorm(750L, 0L, 1L)
  )

rand_walk_helper(df, 100)

RandomWalker documentation built on Aug. 19, 2025, 1:14 a.m.