truth_matrix

truth_matrix()

Binary element-presence matrix. Entry [i][j] is 1 if element i is present at least once in species j, otherwise 0. Row order matches the sorted element list; column order matches the order of species passed to __init__. Returns

list[list[int]]

Shape (n_elements, n_species).

Example

For elements ['C','H','O'] and species ['CO','H2O','CH4']:

[[1, 0, 1],  # C in CO and CH4
 [0, 1, 1],  # H in H2O and CH4
 [1, 1, 0]]  # O in CO and H2O