This method exhaustively checks every possible simplex that could be
formed from p points and returns the indices that generate the simplex
with the largest volume. This should indicate the endmembers based on the
theory of N-FINDR. It should only be used for testing purposes as it
is extremely slow for non-trivial datasets.
Intended to be called from nfindr.
nfindrBrute(data, p, ..., debuglevel = .options("debuglevel"))Data matrix to unmix.
Number of endmembers.
Extra unused parameters passed in from
nfindr.
If >= 1L, print top simplices with their
corresponding volume.
The indices of the endmembers in the original dataset or
a data.frame holding indices and corresponding volume if volume = TRUE.