Test f4 constraints on a graph — satisfies

This function returns TRUE if and only if the admixture graph is compatible with the f4-statistics listed in nonzero_f4 being non-zero

satisfies_nonzerof4(graph, nonzero_f4)

Arguments

graph: An admixture graph
nonzero_f4: A data frame or matrix with four columns. One row for each f4-statistic which is expected to be non-zero

Value

TRUE if all constraints are satisfied, else FALSE

Examples

if (FALSE) {
# Test whether f4(A,B; C,D) is expected to be non-zero in this graph:
nonzero_f4 = matrix(c('A', 'B', 'C', 'D'), 1)
satisfies_nonzerof4(random_admixturegraph(5, 2), nonzero_f4)
}