tidytable (version 0.5.8)

n.: Number of observations in each group

Description

Helper function that can be used to find counts by group.

Can be used inside summarize.(), mutate.(), & filter.()

Usage

n.()

Examples

# NOT RUN {
test_df <- data.table(
  x = c(1,2,3),
  y = c(4,5,6),
  z = c("a","a","b"))

test_df %>%
  summarize.(count = n.(),
             .by = z)

test_df %>%
  mutate.(count = n.())
# }