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Exercise

Filtering rows using logical vectors

In this exercise, you'll use expressions that evaluate to a logical vector to filter rows in a data.table. All rows that evaluate to TRUE will be returned.

Note that you can refer to column names directly, without the need for the $ operator.

Instructions 1/4

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  • 1

    Filter all the rows where start_station is "MLK Library".

  • 2

    Filter all rows where start_station is "MLK Library" and duration is greater than 1600.

  • 3

    Filter all rows where the column subscription_type is not "Subscriber".

  • 4

    Filter all rows where start_station is "Ryland Park" and subscription_type is not "Customer".