ppforest2::viz::BoundaryVisitor Class Reference

Visitor that collects and clips decision boundary line segments. More...

#include <Visualization.hpp>

Public Member Functions
	SpatialVisitor (int var_i, int var_j, std::vector< std::pair< int, types::Feature > > const &fixed_vars, types::Feature x_min, types::Feature x_max, types::Feature y_min, types::Feature y_max)
void	visit (TreeBranch const &node) override
Public Member Functions inherited from ppforest2::viz::SpatialVisitor
	SpatialVisitor (int var_i, int var_j, std::vector< std::pair< int, types::Feature > > const &fixed_vars, types::Feature x_min, types::Feature x_max, types::Feature y_min, types::Feature y_max)
void	visit (TreeBranch const &node) override
	Push constraint, recurse into children, pop.
void	visit (TreeLeaf const &node) override
	No-op default; override in subclasses that need leaf work.
Public Member Functions inherited from ppforest2::TreeNode::Visitor
virtual	~Visitor ()=default

Public Attributes
std::vector< BoundarySegment >	segments
	Output: clipped boundary segments.
Public Attributes inherited from ppforest2::viz::SpatialVisitor
std::vector< HalfSpace >	constraints
	Accumulated ancestor half-space constraints.
int	depth
std::vector< std::pair< int, types::Feature > >	fixed_vars
	Fixed (index, value) pairs.
int	var_i
int	var_j
	Indices of the two displayed feature variables.
types::Feature	x_max
types::Feature	x_min
types::Feature	y_max
	Visible bounding box.
types::Feature	y_min

Detailed Description

Visitor that collects and clips decision boundary line segments.

Traverses the tree, projecting each split's boundary into a 2D plane defined by two feature variables (var_i, var_j). All other variables are held at fixed values to reduce the split from p-D to 2D.

Each boundary line is clipped to:

1. The bounding box [x_min, x_max] × [y_min, y_max].
2. All ancestor half-space constraints (so the line only appears in the region where it is actually the active decision boundary).

Usage:

BoundaryVisitor visitor(0, 1, fixed, x_min, x_max, y_min, y_max);
tree.root->accept(visitor);
// visitor.segments contains all visible boundary segments

Member Function Documentation

SpatialVisitor()

ppforest2::viz::SpatialVisitor::SpatialVisitor	(	int	var_i,
		int	var_j,
		std::vector< std::pair< int, types::Feature > > const &	fixed_vars,
		types::Feature	x_min,
		types::Feature	x_max,
		types::Feature	y_min,
		types::Feature	y_max )

visit()

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

overridevirtual

Reimplemented from ppforest2::TreeNode::Visitor.

Member Data Documentation

segments

std::vector<BoundarySegment> ppforest2::viz::BoundaryVisitor::segments

Output: clipped boundary segments.

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

• core/src/models/Visualization.hpp