Functions: Exploring Data

Question 1

head( )

Answer 1

show the first 5 rows of data in a set you’re exploring

Question 2

names( )

Answer 2

displays the names of all of the columns in your data set

Question 3

view()

Answer 3

view an entire dataset in a new window

Question 4

subset()

Answer 4

fast way to filter rows and select specific columns of a data frame (or similar objects like matrices).

Workaround to using complex indexing and logical functions to retrieve a subset of your data

Arguments
x: The data object you want to subset (e.g., a data frame).
subset: A logical expression indicating the rows to keep.
select: Columns to retain (optional).
drop: Logical. If TRUE, reduces the result to the lowest dimension (default is FALSE).