getChildren function

Generate Child and Parent Node Relationships

Populates childLeft, childRight, and parent columns in the dataset to establish parent-child relationships between nodes based on tree structure.

getChildren(data)

Arguments

• data: A data frame with tree structure, including iteration, treeNum, node, and depth columns, along with a terminal indicator.

Returns

The modified data frame with childLeft, childRight, and parent columns added, detailing the tree's parent-child node relationships.

Examples

data("tree_data_example")
# Create Terminal Column
tree_data_example <- transform(tree_data_example,
                               terminal = ifelse(is.na(var),
                               TRUE,
                               FALSE))
# Get depths
depthList <- lapply(split(tree_data_example, ~treeNum + iteration),
                    function(x) cbind(x, depth = node_depth(x)-1))
# Turn into data frame
tree_data_example <- dplyr::bind_rows(depthList, .id = "list_id")
# Add node number sequntially
tree_data_example$node <- with(tree_data_example,
                               ave(seq_along(iteration),
                               list(iteration, treeNum),
                               FUN = seq_along))
# get children
getChildren(data = tree_data_example)