how to delete column in r code example

Example 1: r data frame remove column

df$columnName <- NULL

Example 2: drop a column in r data frame

df <- df %>%
  select(-column_to_drop)

Example 3: R drop columns

undesired <- c('mpg', 'cyl', 'hp')

mtcars <- mtcars %>%
  select(-one_of(undesired))