Description Usage Arguments Value See Also Examples
Compute the descendants for each node of a graph.
1 2 3 4 5 |
g |
a graph of class |
levels |
a list of character vectors. Each component represents a graph level and the elements of any component correspond to nodes. The level 0 coincides with the root node. |
build.descendants
returns a named list of vectors.
Each component corresponds to a node x of the graph, and its vector is the set of its descendants including also x.
build.descendants.per.level
returns a named list of vectors.
Each component corresponds to a node x of the graph and its vector is the set of its descendants including also x.
The nodes are ordered from root (included) to leaves.
build.descendants.bottom.up
returns a named list of vectors.
Each component corresponds to a node x of the graph and its vector is the set of its descendants including also x.
The nodes are ordered from leaves to root (included).
1 2 3 4 5 6 | data(graph);
root <- root.node(g);
desc <- build.descendants(g);
lev <- graph.levels(g, root=root);
desc.tod <- build.descendants.per.level(g,lev);
desc.bup <- build.descendants.bottom.up(g,lev);
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