detect_categoricals: Detect likely categorical variables in a data frame

In earthUI: Interactive 'shiny' GUI for the 'earth' Package

Detect likely categorical variables in a data frame

Description

Returns a logical named vector indicating which columns are likely categorical. Character and factor columns are always flagged. Numeric columns with fewer than max_unique unique values are also flagged.

Usage

detect_categoricals(df, max_unique = 10L)

Arguments

df	A data frame.
max_unique	Integer. Numeric columns with this many or fewer unique values are flagged as likely categorical. Default is 10.

Value

A named logical vector with one element per column. TRUE indicates the column is likely categorical.

Examples

df <- data.frame(
  price = c(100, 200, 300, 400),
  pool = c("Y", "N", "Y", "N"),
  bedrooms = c(2, 3, 2, 4),
  sqft = c(1200, 1500, 1300, 1800)
)
detect_categoricals(df)

earthUI documentation built on March 26, 2026, 1:07 a.m.