PPregNodeViz: Node visualization

In PPtreeregViz: Projection Pursuit Regression Tree Visualization

Node visualization

Description

Visualize node in projection pursuit regression tree.

Usage

PPregNodeViz(PPTreeregOBJ,node.id,Rule=5)

Arguments

PPTreeregOBJ	PPTreereg class object - a model to be explained
node.id	node ID of inner or final node
Rule	split rule 1: mean of two group means 2: weighted mean of two group means - weight with group size 3: weighted mean of two group means - weight with group sd 4: weighted mean of two group means - weight with group se 5: mean of two group medians 6: weighted mean of two group medians - weight with group size 7: weighted mean of two group median - weight with group IQR 8: weighted mean of two group median - weight with group IQR and group size

Details

This function is developed for the visualization of inner and final nodes. Visual representation of the projection coefficient value of each node and the result of projected data help understand growth process of the projection pursuit regression tree. For the inner node, two plots are provided - the bar chart style plot with projection pursuit coefficients of each variable, the histogram of the projected data. For the final node, scatter plot of observed Y vs. fitted Y according to the final rules.

Value

An object of the class ggplot

Examples

data(dataXY)
Model <- PPTreereg(Y~., data = dataXY, DEPTH = 2)
PPregNodeViz(Model,node.id=1)
PPregNodeViz(Model,node.id=4)

PPtreeregViz documentation built on Dec. 24, 2022, 1:50 a.m.