Filtering rows using negative integers
Sometimes, instead of selecting all of the rows you want individually, it makes sense to deselect the rows you do not want to include. Recall that this can be done using either the ! or the - operators.
For example, dt[-(1:5)] returns all rows except the first five.
Note: dt[-(1:5)] is equivalent to dt[!(1:5)].
Este exercício faz parte do curso
Data Manipulation with data.table in R
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
# Select all rows except the first two
not_first_two <- ___
not_first_two