List all combinations of values
cross_list(...) cross_tbl(...)
... | Inputs or a list of inputs |
---|
A list for cross_list()
or tibble for
cross_tbl()
.
Names will match the names of the inputs.
Unnamed inputs will be left unnamed for cross_list()
and automatically
named for cross_tbl()
.
cross_join()
to find combinations of data frame rows.
purrr::cross()
for an implementation that results in a differently
formatted list.
expand.grid()
for an implementation that results in a data.frame.
fruits <- c("apple", "banana", "cantaloupe") desserts <- c("cupcake", "muffin", "streudel") cross_list(list(fruits, desserts))#> [[1]] #> [1] "apple" "banana" "cantaloupe" "apple" "banana" #> [6] "cantaloupe" "apple" "banana" "cantaloupe" #> #> [[2]] #> [1] "cupcake" "cupcake" "cupcake" "muffin" "muffin" "muffin" "streudel" #> [8] "streudel" "streudel" #>cross_list(fruits, desserts)#> [[1]] #> [1] "apple" "banana" "cantaloupe" "apple" "banana" #> [6] "cantaloupe" "apple" "banana" "cantaloupe" #> #> [[2]] #> [1] "cupcake" "cupcake" "cupcake" "muffin" "muffin" "muffin" "streudel" #> [8] "streudel" "streudel" #>cross_tbl(fruits, desserts)#>#> #>#> # A tibble: 9 x 2 #> ...1 ...2 #> <chr> <chr> #> 1 apple cupcake #> 2 banana cupcake #> 3 cantaloupe cupcake #> 4 apple muffin #> 5 banana muffin #> 6 cantaloupe muffin #> 7 apple streudel #> 8 banana streudel #> 9 cantaloupe streudel#> $fruit #> [1] "apple" "banana" "cantaloupe" "apple" "banana" #> [6] "cantaloupe" "apple" "banana" "cantaloupe" #> #> $dessert #> [1] "cupcake" "cupcake" "cupcake" "muffin" "muffin" "muffin" "streudel" #> [8] "streudel" "streudel" #>cross_list(fruit = fruits, dessert = desserts)#> $fruit #> [1] "apple" "banana" "cantaloupe" "apple" "banana" #> [6] "cantaloupe" "apple" "banana" "cantaloupe" #> #> $dessert #> [1] "cupcake" "cupcake" "cupcake" "muffin" "muffin" "muffin" "streudel" #> [8] "streudel" "streudel" #>cross_tbl(fruit = fruits, dessert = desserts)#> # A tibble: 9 x 2 #> fruit dessert #> <chr> <chr> #> 1 apple cupcake #> 2 banana cupcake #> 3 cantaloupe cupcake #> 4 apple muffin #> 5 banana muffin #> 6 cantaloupe muffin #> 7 apple streudel #> 8 banana streudel #> 9 cantaloupe streudel