generate_check_data: Generate 'check_data()' Code

In chk: Check User-Supplied Function Arguments

Generate check_data() Code

Description

Generates the code for a check_data() call from an example data frame so the column specification does not have to be written out by hand.

Usage

generate_check_data(x, data_name = NULL)

Arguments

x	A data frame to generate the check_data() code from.
data_name	A string of the name to use for the data frame in the generated code or NULL to use the name of x.

Details

For each column the generated values entry captures

• the column's class,

• whether it permits missing values,

• the range (minimum and maximum) of numeric, Date and POSIXct columns, and

• the levels of factors.

The result is a starting point that is expected to be edited, for example to widen a range or relax a set of factor levels. The code is printed to the console (so it can be copied) and returned invisibly as a string.

Value

A string of the generated code, invisibly.

See Also

check_data()

Examples

data <- data.frame(
  count = c(1L, 3L, NA),
  letter = c("a", "b", "c"),
  height = c(1.5, 2.5, 3.5)
)
generate_check_data(data)

chk documentation built on Sept. 3, 2026, 9:07 a.m.