Filter rows on one or more conditions

Filters a dataset to choose rows where conditions are true.

filter(.df, ..., .by = NULL)

Arguments

.df

A data.frame or data.table

...

Conditions to filter by

.by

Columns to group by if filtering with a summary function

Examples

df <- tidytable(
  a = 1:3,
  b = 4:6,
  c = c("a", "a", "b")
)

df %>%
  filter(a >= 2, b >= 4)
#> # A tidytable: 2 × 3
#>       a     b c    
#>   <int> <int> <chr>
#> 1     2     5 a    
#> 2     3     6 b    

df %>%
  filter(b <= mean(b), .by = c)
#> # A tidytable: 2 × 3
#>       a     b c    
#>   <int> <int> <chr>
#> 1     1     4 a    
#> 2     3     6 b