simdata: Simulate data for back-projection exercises

In bbolker/cpcbp: common principal components/back-projection analysis

Description

Creates identically shaped but offset multivariate normal groups

Usage

simdata(vars = c(10, 10, 10), cors = 0.8, npts = 200, seed, m1a = rep(0, length(vars)), offset = 1, offset2 = 0)

Arguments

vars	within-group variances
cors	within-group correlations
npts	number of points in each group (will be repeated as necessary)
seed	random-number seed
m1a	means of first group
offset	offset(s) in the first PC direction
offset2	offset(s) in the second PC direction

Value

a data frame containing the "data" for each group, followed by a factor specifying the group

Author(s)

Ben Bolker

Examples

   X = simdata(offset=10,offset2=3)
   plot_multigrp(X)

bbolker/cpcbp documentation built on May 11, 2019, 9:28 p.m.