ChanceNode: A chance node in a decision tree

In rdecision: Decision Analytic Modelling in Health Economics

A chance node in a decision tree

Description

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

Details

A chance node is associated with at least two branches to other nodes, each of which has a conditional probability (the probability of following that branch given that the node has been reached). Inherits from class Node.

Super class

rdecision::Node -> ChanceNode

Methods

Public methods

• ChanceNode$new()

• ChanceNode$grob()

• ChanceNode$clone()

Inherited methods

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

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Method new()

Create a new ChanceNode object

Usage

ChanceNode$new(label = "")

Arguments

label

An optional label for the chance node.

Returns

A new ChanceNode object

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Method grob()

Creates a grid::grob for a chance node.

Usage

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

Arguments

x

x coordinate of the node, grid::unit object.

y

y coordinate of the node, grid::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 elements: left, right, bottom, top.

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Method clone()

The objects of this class are cloneable with this method.

Usage

ChanceNode$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Author(s)

Andrew Sims [e-mail]

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