GPA: Generalised Orthogonal Procrustes Analysis

In GPAbin: Unifying Multiple Biplot Visualisations into a Single Display

Generalised Orthogonal Procrustes Analysis

Description

This function contains the OPA function to compare two configurations and the GPA function for multiple configuration comparisons

Usage

GPA(Xk, G.target = NULL, iter = 500, eps = 0.001)

Arguments

Xk	list containing the testee configurations which is updated on #each iteration
G.target	Target configuration. If not specified the centroid configuration will be used as the target
iter	Number of iterations allowed before convergence
eps	Threshold value for convergence of the alogrithm

Value

Xk.F	List containing the updated testee configurations
sk.F	Vector containing the final scaling factors
Qk.F	List containing the final rotation matrices
Gmat	Final target configuration
sum.sq	Final minimised sum of squared distance

GPAbin documentation built on Aug. 8, 2025, 6:19 p.m.