Add layer information to a forest that was created by getTreeranger

This functions adds the layer information to each node in a list with trees that was obtained by getTreeranger. You should use getTreeranger() with add_layer = TRUE instead.

Usage

addLayer(trees, num.threads = 1)

Arguments

trees

The output of getTreeranger().

num.threads

(Default: 1) Number of threads to spawn for parallelization.

Value

A list of tree data frames of length RF$num.trees. Each row of the tree data frames corresponds to a node of the respective tree and the columns correspond to:

• nodeID: ID of the respective node (important for left and right daughters in the next columns)

• leftdaughter: ID of the left daughter of this node

• rightdaughter: ID of the right daughter of this node

• splitvariable: ID of the split variable

• splitpoint: Split point of the split variable. For categorical variables this is a comma separated lists of values, representing the factor levels (in the original order) going to the right.

• status: 0 for terminal (splitpoint is NA) and 1 for non-terminal.

• layer: Tree layer depth information, starting at 0 (root node) and incremented for each layer.