Top N and Last N records in R Data Frame

Question

How to fetch top N and last N records in R Data Frame?

Answer 1

Use head() to fetch first N rows and tail() to fetch last N rows.

head(airquaity, N) and tail(airquality, N)

Answer 2

Hi,

top_n( ) and top_frac( ) also is used to fetch the top n records by nunber or fraction.

top_n(x, n, wt)

top_frac(x, n, wt)

Ex:

df %>% top_n(n() * .5)
df %>% top_frac(.5)