filter | R Documentation |
Filters a dataset to choose rows where conditions are true.
filter(.df, ..., .by = NULL)
.df |
A data.frame or data.table |
... |
Conditions to filter by |
.by |
Columns to group by if filtering with a summary function |
df <- tidytable(
a = 1:3,
b = 4:6,
c = c("a", "a", "b")
)
df %>%
filter(a >= 2, b >= 4)
df %>%
filter(b <= mean(b), .by = c)
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