Sheparddiagram: Draws a Shepard Diagram

In DataVisualizations: Visualizations of High-Dimensional Data

Draws a Shepard Diagram

Description

This function plots a Shepard diagram which is a scatter plot of InputDist and OutputDist

Usage

Sheparddiagram(InputDists, OutputDists, xlab = "Input Distances",

                 ylab= "Output Distances", fancy = F,

				 main = "ProjectionMethod", gPlot = ggplot())

Arguments

InputDists	[1:n,1:n] with n cases of data in d variables/features: Matrix containing the distances of the inputspace.
OutputDists	[1:n,1:n] with n cases of data in d dimensionalites of the projection method variables/features: Matrix containing the distances of the outputspace.
xlab	Label of the x axis in the resulting Plot.
ylab	Label of the y axis in the resulting Plot.
fancy	Set FALSE for PC and TRUE for publication
main	Title of the Shepard diagram
gPlot	ggplot2 object to plot upon.

Value

ggplot2 object containing the plot.

Author(s)

Michael Thrun

Examples

data("Lsun3D")
Cls=Lsun3D$Cls
Data=Lsun3D$Data
InputDist=as.matrix(dist(Data))
res = stats::cmdscale(d = InputDist, k = 2, eig = TRUE, 
        add = FALSE, x.ret = FALSE)
ProjectedPoints = as.matrix(res$points)


Sheparddiagram(InputDist,as.matrix(dist(ProjectedPoints)),main = 'MDS')

DataVisualizations documentation built on Oct. 10, 2023, 9:06 a.m.