R version 3.0.2 (2013-09-25) -- "Frisbee Sailing" Copyright (C) 2013 The R Foundation for Statistical Computing Platform: x86_64-pc-linux-gnu (64-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 <- c(193590,193745,193885,194040,194190,194345,194495,194650,194805,194955,195110,195260,195415,195570,195710,195865,196015,196170,196320,196475,196630,196780,196935,197085,197240,197395,197540,197695,197845,198000,198150,198305,198460,198610,198765,198915,199070,199225,199365,199520,199670,199825,199975,200130,200285,200435,200590,200740,200895,201050,201190,201345,201495,201650,201800,201955,202110,202260,202415,202565,202720,202875,203015,203170,203320,203475,203625,203780,203935,204085,204240,204390,204545,204700,204845,205000,205150,205305,205455,205610,205765,205915,206070,206220,206375,206530,206670,206825,206975,207130,207280,207435,207590,207740,207895,208045,208200,208355,208495,208650,208800,208955,209105,209260,209415,209565,209720,209870) > par4 = '12' > par3 = '' > par2 = 'niet bekend ' > par1 = 'Aantal verkochte exemplaren 'Gazet van Antwerpen'' Error: unexpected symbol in "par1 = 'Aantal verkochte exemplaren 'Gazet" Execution halted