Translate target effect to vector of response variables
create_effect_vector(effect, graph, obsvars, respvars, q.list, variables)
Effect list, as returned by parse_effect
The graph
Vector of observed variable vertices from the graph
Response function, as returned by create_response_function
List with q matrices, as returned by create_q_matrix
Vector of qs names
A list with the target effect in terms of qs