Utility functions for data type conversion between data.frame and list.

Usage

data_frame_to_list(x)

list_to_data_frame(x)

Arguments

x: A data.frame with logical columns representing sets, or a list of sets.

Value

A list of sets or a data.frame with logical columns representing sets.

Examples

# Convert data.frame to list
d <- dplyr::tibble(name = 1:6,
            A = c(rep(TRUE, 5), FALSE),
            B = rep(c(FALSE, TRUE), each = 3))
print(d)
#> # A tibble: 6 × 3
#>    name A     B    
#>   <int> <lgl> <lgl>
#> 1     1 TRUE  FALSE
#> 2     2 TRUE  FALSE
#> 3     3 TRUE  FALSE
#> 4     4 TRUE  TRUE 
#> 5     5 TRUE  TRUE 
#> 6     6 FALSE TRUE 
data_frame_to_list(d)
#> $A
#> [1] 1 2 3 4 5
#> 
#> $B
#> [1] 4 5 6
#> 

# Convert list to data.frame
a <- list(A = 1:5, B = 4:6)
print(a)
#> $A
#> [1] 1 2 3 4 5
#> 
#> $B
#> [1] 4 5 6
#> 
list_to_data_frame(a)
#> # A tibble: 6 × 3
#>   `_key` A     B    
#>    <int> <lgl> <lgl>
#> 1      1 TRUE  FALSE
#> 2      2 TRUE  FALSE
#> 3      3 TRUE  FALSE
#> 4      4 TRUE  TRUE 
#> 5      5 TRUE  TRUE 
#> 6      6 FALSE TRUE 

# Round-trip conversion
identical(a, data_frame_to_list(list_to_data_frame(a)))  # TRUE
#> [1] TRUE
identical(d, list_to_data_frame(data_frame_to_list(d)))  # TRUE
#> [1] FALSE