In bjornerstedt/assist: Help files, vignettes and packaging

Back to overview

Filter rows

flights %>% 
filter(month == 1, day == 1)

Sort rows

flights %>% 
arrange(year, month)

Select columns

flights %>% 
select(year, month)

Unique rows

flights %>% 
distinct()

Add column

flights %>% 
mutate(flights,
  gain = arr_delay - dep_delay,
  gain_per_hour = gain / (air_time / 60)
)

Grouping - by

flights %>% 
group_by(column)

Summarize

flights %>% 
summarise(
  count = n(),
  dist = mean(distance, na.rm = TRUE),
  s = sum(distance, na.rm = TRUE)
)

Functions: n_distinct(x), first(x), last(x), nth(x, n)

bjornerstedt/assist documentation built on May 12, 2019, 9:26 p.m.