has_m1_labs {labelr}

Is This an add_m1_lab() Many-to-One-Style Value-labeled Variable (Column)?

Description

Determine whether a specific variable of a data.frame has many-to-one-style value labels associated with it (i.e., via add_m1_lab() or add1m1()).

Usage

has_m1_labs(data, var)

hm1l(data, var)

Arguments

data

a data.frame.

var

the unquoted name of the variable (column) to check for the presence of many-to-one-style value labels.

Details

hm1l is a compact alias for has_m1_labs: they do the same thing, and the former is easier to type

Value

A 1L logical.

Examples

# add many-to-one style labels for "carb" and one-to-one style for "am"
df <- mtcars

df <- add_m1_lab(df,
  vars = "carb",
  vals = 1:3,
  lab = "<=3",
  max.unique.vals = 10
)

df <- add_m1_lab(df,
  vars = "carb",
  vals = c(4, 6, 8),
  lab = ">=4",
  max.unique.vals = 10
)

df <- add_val_labs(df,
  vars = "am",
  vals = c(0, 1),
  labs = c("autom", "manu"),
  max.unique.vals = 10
)

has_m1_labs(df, carb) # TRUE, carb has m1-style value labels

has_val_labs(df, am) # TRUE, am does have value labels

has_m1_labs(df, am) # FALSE, am's value labels are not not m1-style labels