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Filters a dataset to choose rows where conditions are true.
filter.(.df, ..., .by = NULL)
A data.frame or data.table
Conditions to filter 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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