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.
This is a part of the course
“Data Manipulation with data.table in R”
Exercise instructions
Deselect the columns start_terminal and end_terminal from batrips.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Deselect start_terminal and end_terminal columns
drop_terminal_cols <- ___
drop_terminal_cols