Convert an lb_result to an igraph object

Extracts node and relationship columns from a LadybugDB query result and constructs an igraph::graph_from_data_frame() object.

Usage

as_igraph(x, ...)

Arguments

x

An lb_result object.

...

Unused; kept for S3 compatibility.

Value

An igraph::igraph object.

Details

Node columns must have LadybugDB type NODE and relationship columns type REL/RELATIONSHIP. When the result contains no structural columns the function aborts with an informative error.

Examples

if (FALSE) { # \dontrun{
db   <- lb_database(":memory:")
conn <- lb_connection(db)
lb_execute(conn, "CREATE NODE TABLE Person (name STRING, PRIMARY KEY(name))")
lb_execute(conn, "CREATE REL TABLE Knows (FROM Person TO Person)")
lb_execute(conn, "CREATE (:Person {name:'A'})-[:Knows]->(:Person {name:'B'})")
result <- lb_execute(conn, "MATCH (a:Person)-[r:Knows]->(b:Person) RETURN a, r, b")
g <- as_igraph(result)
} # }