R version 2.13.0 (2011-04-13) Copyright (C) 2011 The R Foundation for Statistical Computing ISBN 3-900051-07-0 Platform: i486-pc-linux-gnu (32-bit) 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(510,460,570,520,470,500,520,500,580,460,530,610,460,380,570,480,530,530,580,420,580,460,520,640,380,360,610,440,520,540,580,360,500,530,470,660,410,360,610,360,540,560,580,480,560,560,390,630,380,440,620,310,500,660,420,550,570,560,290,560,320,440,610,250,510,670,350,590,500,530,300,620,280,450,620,320,560,680,370,670,510,480,280,570,240,460,600,320,570,680,390,700,570,450,270,640,230,490,590,310,570,660,370,600,540,510,330,590),dim=c(1,108),dimnames=list(c('aantal','bezoekers','per','maand','(in','tiental)'),1:108)) Error in dimnames(data) <- dimnames : length of 'dimnames' [1] not equal to array extent Calls: array Execution halted