cards (version 0.3.0)

selectors: ARD Selectors

Description

These selection helpers match variables according to a given pattern.

• all_ard_groups(): Function selects grouping columns, e.g. columns named "group##" or "group##_level".

• all_ard_variables(): Function selects variables columns, e.g. columns named "variable" or "variable_level".

• all_ard_group_n(): Function selects n grouping columns.

• all_missing_columns(): Function selects columns that are all NA or empty.

Usage

all_ard_groups(types = c("names", "levels"))
all_ard_variables(types = c("names", "levels"))
all_ard_group_n(n)
all_missing_columns()

Value

tidyselect output

Arguments

types

(character)
type(s) of columns to select. "names" selects the columns variable name columns, and "levels" selects the level columns. Default is c("names", "levels").

n

(integer)
integer(s) indicating which grouping columns to select.

Examples

ard <- ard_categorical(ADSL, by = "ARM", variables = "AGEGR1")

ard |> dplyr::select(all_ard_groups())
ard |> dplyr::select(all_ard_variables())