r remove column by name data table 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 column by name

R> subset(df, select=-c(z,u))
  x y
1 1 2
2 2 3
3 3 4
4 4 5
5 5 6