Build a Fiss-style configuration matrix (4-symbol)
build_fiss_matrix(interm_terms, classification, conditions, symbols, thr_label)Character vector of intermediate-solution terms
Data frame from compute_fiss_core() for one
threshold (the $classification element)
Character vector of condition names (row order)
Fiss symbol set (one element of SYMBOL_SETS_FISS)
Character. Label prefix for column headers (e.g. "thrY=7")
Character matrix with conditions as rows, terms as columns