Return indices of first elements of the list, which are incomparable with preceding elements.

The function returns indices of elements from the given list x, which are incomparable (i.e., it is neither subset nor superset) with any preceding element. The first element is always selected. The next element is selected only if it is incomparable with all previously selected elements.

Usage

which_antichain(x, distance = 0)

Arguments

x

a list of integerish vectors

distance

a non-negative integer, which specifies the allowed discrepancy between compared sets

Value

an integer vector of indices of selected (incomparable) elements.

Author

Michal Burda