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Per-Leaf Mask From Top-Level Groups

Source: R/tree.R
tree_leaf_mask.Rd

A logical mask over the leaves (in flat order) that is TRUE for every leaf sitting under a top-level child whose name is in groups. An empty groups yields an all-FALSE mask.

Usage

tree_leaf_mask(tree, groups)

Arguments

tree

(RTree)
A tree whose root is a list node.

groups

(character())
Top-level child names to mark.

Value

A logical vector of length tree_size(tree).

See also

tree_child_names()

Examples

tree_leaf_mask(build_tree(list(a = 1, b = list(2, 3))), "b")
#> [1] FALSE  TRUE  TRUE