Deselecting specific columns
You can also drop or deselect columns by prepending the character vector of column names with the - or ! operators. For e.g., dt[, -c("col1", "col2")] or dt[, !c("col1", "col2")] would both return all columns except col1 and col2.
Deze oefening maakt deel uit van de cursus
Data Manipulation with data.table in R
Oefeninstructies
Deselect the columns start_terminal and end_terminal from batrips.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Deselect start_terminal and end_terminal columns
drop_terminal_cols <- ___
drop_terminal_cols