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Generate a single-world intervention graph (SWIG)

Source: R/qd_swig.R
qd_swig.Rd

Take a DAG graph object and, in the simplest case, create a single-world intervention template corresponding to a world in which the fixed nodes are set to a given value. Alternatively, tell qd_swig() which values fixed nodes will be set to.

Usage

qd_swig(
  graph_obj,
  fixed_nodes,
  custom_values = NULL,
  fixed_sep = "vlin",
  sep_point_size = 15
)

Arguments

graph_obj

A DAG object created by qd_dag().

fixed_nodes

A vector containing the nodes to be intervened upon.

custom_values

A named vector containing alternative labels identifying explicit values for fixed nodes (e.g., c("A" = "1")).

fixed_sep

A character string indicating which character to use as a separator in fixed nodes. Defaults to "vlin". Run sep_opts(TRUE) for available options.

sep_point_size

A numerical value specifying the point size for fixed node separators.

Examples

# Provide a DAG object and a list of nodes to be fixed
edges <- c("A -> Y",
           "L -> { A Y }")

dag  <- qd_dag(edges)
#> 
#> 
#> CHECKED: The diagram is a DAG. 

swig <- dag |>
        qd_swig(fixed_nodes = "A",
                custom_values = c("A" = "1"))

swig |> DiagrammeR::render_graph()