Visitor that routes observations through the tree and collects per-node projection data for histogram rendering. More...

#include <Visualization.hpp>

Public Member Functions
	NodeDataVisitor (types::FeatureMatrix const &x, types::OutcomeVector const &y)

void	visit (TreeBranch const &node) override

void	visit (TreeLeaf const &node) override

Public Member Functions inherited from ppforest2::TreeNode::Visitor
virtual	~Visitor ()=default

Public Attributes
int	depth
	Current depth in the traversal.

std::vector< int >	indices
	Indices of observations reaching the current node.

std::vector< NodeData >	nodes
	Collected node data (pre-order).

types::FeatureMatrix const &	x
	Full observation matrix (n × p).

types::OutcomeVector const &	y
	Full response vector (n).

Detailed Description

Visitor that routes observations through the tree and collects per-node projection data for histogram rendering.

Usage:

NodeDataVisitor visitor(x, y);
tree.root->accept(visitor);
// visitor.nodes is a pre-order vector of NodeData

At each split node the visitor projects all reaching observations onto the node's projector, records the projected values and group labels, partitions observation indices by the cutpoint, and recurses into the lower and upper children. Nodes are accumulated in pre-order (parent before children, left before right).

The observation routing respects the tree structure exactly: an observation reaching a split goes to the lower child if its projected value < cutpoint, otherwise to the upper child.

Constructor & Destructor Documentation

◆ NodeDataVisitor()

ppforest2::viz::NodeDataVisitor::NodeDataVisitor	(	types::FeatureMatrix const &	x,
		types::OutcomeVector const &	y )

Member Function Documentation

◆ visit() [1/2]

void ppforest2::viz::NodeDataVisitor::visit ( TreeBranch const & node )

overridevirtual

Reimplemented from ppforest2::TreeNode::Visitor.

◆ visit() [2/2]

void ppforest2::viz::NodeDataVisitor::visit ( TreeLeaf const & node )

overridevirtual

Reimplemented from ppforest2::TreeNode::Visitor.

Member Data Documentation

◆ depth

int ppforest2::viz::NodeDataVisitor::depth

Current depth in the traversal.

◆ indices

std::vector<int> ppforest2::viz::NodeDataVisitor::indices

Indices of observations reaching the current node.

◆ nodes

std::vector<NodeData> ppforest2::viz::NodeDataVisitor::nodes

Collected node data (pre-order).

◆ x

types::FeatureMatrix const& ppforest2::viz::NodeDataVisitor::x

Full observation matrix (n × p).

◆ y

types::OutcomeVector const& ppforest2::viz::NodeDataVisitor::y

Full response vector (n).

The documentation for this class was generated from the following file:

core/src/models/Visualization.hpp

Public Member Functions

Public Attributes