Hilbert conversion, distance to coordinates

hilbertd2xy(n, d)

Arguments

n	Size (must be a 2^k value, such as 4,8,16,32)
d	A vector of values to be converted to coordinates (starts with 0)

Tibble with columns x and y

hilbertd2xy(64,31)
#> # A tibble: 1 x 2
#>       x     y
#>   <dbl> <dbl>
#> 1     3     4