The goal of minby is to solve the common problem of finding the minimum of a variable broken down by a group. To save you even more time, it includes a precomputed dataset giving the answer to one of the most important data science questions of 2022: what is the minimum of mpg by cyl?
You can install the development version of minby like so:
remotes::install_github("hadley/minby")library(minby)
min_mpg_by_cyl
#> cyl mpg
#> 1 4 21.4
#> 2 6 17.8
#> 3 8 10.4
mtcars |> min_by(cyl, c(vs, am))
#> # A tibble: 4 × 3
#> # Groups: vs [2]
#> vs am cyl
#> <dbl> <dbl> <dbl>
#> 1 0 0 8
#> 2 0 1 4
#> 3 1 0 4
#> 4 1 1 4
mtcars |> min_by(where(is.numeric), cyl)
#> # A tibble: 3 × 11
#> cyl mpg disp hp drat wt qsec vs am gear carb
#> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1 4 21.4 71.1 52 3.69 1.51 16.7 0 0 3 1
#> 2 6 17.8 145 105 2.76 2.62 15.5 0 0 3 1
#> 3 8 10.4 276. 150 2.76 3.17 14.5 0 0 3 2