Introducing bikes data
Throughout the rest of the course, you will use the batrips
dataset from the bikeshare14
package, which contains anonymous bike share data on bicycle trips around San Francisco in 2014. Type batrips
in the console and hit enter. Note how data.table
automatically limits printing to just the top 5 and bottom 5 rows of the dataset along with column names and row numbers.
Recall that since a data.table
is a data.frame
, you can use base R functions like ncol()
, nrow()
, head()
, tail()
and str()
for exploring data.table
s.
Unless otherwise mentioned, assume that both data.table
and batrips
are loaded in your exercises.
This exercise is part of the course
Data Manipulation with data.table in R
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Get number of columns in batrips
col_number <- ___(batrips)