r_na: Replace a Proportion of Values With NA
In wakefield: Generate Random Data Sets

Description Usage Arguments Value Examples

Replaces a proportion of values with NA. Useful for simulating missing data.

1	r_na(x, cols = -1, prob = 0.05)

`x`	A `data.frame` or `list` to randomly replace elements with `NA`s.
`cols`	Numeric indices of the columns to incude (use `-` to exlcude as well). Default is to assign random `NA`s to al columns except the first column.
`prob`	The proportion of each column/vector elements to assign to `NA`.

Returns a data.frame or list with random missing values.

r_na(mtcars)
r_na(mtcars, NULL)


library(dplyr)

r_data_frame(
    n = 30,
    id,
    race,
    age,
    sex,
    hour,
    iq,
    height,
    died,
    Scoring = rnorm,
    Smoker = valid
) %>%
    r_na(prob=.4)