extract_cat_cols: Title

In m-dz/mdmisc:

Description

Title

Usage

extract_cat_cols(dt, levels_max = NULL, levels_min = 1, exclude = NA)

Arguments

levels_max

Examples

library(data.table)
dt <- data.table(
  V1 = rep(1.1, 10),
  V2 = rep(2L, 10),
  V3 = rep('a',10),
  V4 = letters[1:10])
extract_cat_cols(dt, levels_max = NULL, levels_min = 1)
extract_cat_cols(dt, levels_max = 5, levels_min = 1)
extract_cat_cols(dt, levels_max = NULL, levels_min = 5)
extract_cat_cols(dt, exclude = 'V3')

# Args check:
extract_cat_cols(dt, levels_max = -1, levels_min = 1)
extract_cat_cols(dt, levels_max = NULL, levels_min = -1)
extract_cat_cols(dt, levels_max = 1, levels_min = 5)
dt

m-dz/mdmisc documentation built on May 22, 2019, 12:23 p.m.