expand_nodal_expression function

Helper to expand nodal expression

expand_nodal_expression(model, query, node, join_by = "|")

Arguments

• model: A causal_model. A model object generated by make_model.
• query: A character string. An expression defining nodal types to interrogate. An expression of the form "Y[X=1]" asks for the value of Y when X is set to 1
• node: A character string. The quoted name of a node.
• join_by: A logical operator. Used to connect causal statements: AND ('&') or OR ('|'). Defaults to '|'.

Returns

A nodal expression with no missing parents