DecisionNode: A decision node in a decision tree

In rdecision: Decision Analytic Modelling in Health Economics

A decision node in a decision tree

Description

An R6 class representing a decision node in a decision tree.

Details

A class to represent a decision node in a decision tree. The node is associated with one or more branches to child nodes. Inherits from class Node.

Super class

rdecision::Node -> DecisionNode

Methods

Public methods

• DecisionNode$new()

• DecisionNode$grob()

• DecisionNode$clone()

Inherited methods

• rdecision::Node$label()
• rdecision::Node$modvars()
• rdecision::Node$type()

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Method new()

Create a new decision node.

Usage

DecisionNode$new(label)

Arguments

label

A label for the node. Must be defined because the label is used in tabulation of strategies. The label is automatically converted to a syntactically valid (in R) name to ensure it can be used as a column name in a data frame.

Returns

A new DecisionNode object.

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Method grob()

Creates a grid::grob for drawing a decision node.

Usage

DecisionNode$grob(x, y, bb = FALSE)

Arguments

x

x coordinate of the node, unit object.

y

y coordinate of the node, unit object.

bb

Logical. If TRUE, function returns the bounding box.

Returns

A grob containing the symbol and label, or a bounding box as a grid::unit vector with 4 values: left, right, bottom, top.

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Method clone()

The objects of this class are cloneable with this method.

Usage

DecisionNode$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Author(s)

Andrew J. Sims [e-mail]

rdecision documentation built on April 3, 2025, 6:09 p.m.