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DiagrammeR (version 0.8.1)

trav_in_edge: Traverse from one or more selected nodes onto adjacent, inward edges

Description

From a graph object of class dgr_graph move to incoming edges from a selection of one or more selected nodes, thereby creating a selection of edges. An optional filter by edge attribute can limit the set of edges traversed to.

Usage

trav_in_edge(graph, edge_attr = NULL, match = NULL)

Arguments

graph
a graph object of class dgr_graph that is created using create_graph.
edge_attr
an optional character vector of edge attribute values for filtering the node ID values returned.
match
an option to provide a logical expression with a comparison operator (>, <, ==, or !=) followed by a number for numerical filtering, or, a character string for filtering the edges returned through string

Value

  • a graph object of class dgr_graph.