Remove tree nodes by regular expression pattern matching.Source:
"prune" takes an object of class
removes all branches whose branch labels match a given regular
an object of class
a regular expression.
logical indicating whether the nodes whose labels match the regular expression provided in "pattern" should be kept and the remainder discarded. Defaults to FALSE. Note that nodes without "label" attributes are ignored.
further arguments to be passed to
This function recursively tests the "label" attribute of each dendrogram node (including non-leaf inner nodes if applicable) for the specified pattern, removing those that register a positive hit. Note that positive matching inner nodes are removed along with all of their sub-nodes, regardless of whether the "label" attributes of the sub-nodes match the pattern.