R version 2.9.0 (2009-04-17) Copyright (C) 2009 The R Foundation for Statistical Computing ISBN 3-900051-07-0 R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. > x <- array(list(pre,post1,1,1,1,1,0,1,0,0,1,1,1,1,1,1,0,1,0,1,1,1,0,0,0,1,0,1,0,1,0,0,1,1,1,1,1,1,0,1,0,0,1,1,1,1,0,0,1,0,1,1,1,0,1,1,0,0,0,0,1,1,1,0,1,1,0,0,0,0,0,0,1,1,1,1,0,1,0,1,1,1,1,1,1,1,1,1,1,1,0,0,0,1,0,1,1,1,1,1,0,0,0,1,1,1,0,1,0,0,0,1,0,1,0,1,0,1,0,0,0,0,0,1,1,1,1,1,1,0,0,0,0,1,0,1,0,0,1,1,1,1,0,1,0,1,0,1,0,1,1,1,1,0,0,0,1,1,1,0,1,1,0,0,0,0,0,0,1,0,0,0,0,0,1,0,1,1,0,0,0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,1,1,1,0,0,0,0,1,1,0,0,0,0,0,0,0,1),dim=c(2,106),dimnames=list(c('Mean1','Mean2',''),1:106)) Error in as.vector(data) : object 'pre' not found Calls: array -> as.vector Execution halted