R version 3.0.1 (2013-05-16) -- "Good Sport" Copyright (C) 2013 The R Foundation for Statistical Computing Platform: i686-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 <- c(Lederenlaarzen,107.2,107.56,107.72,108.14,108.16,108.16,108.16,108.1,108.95,110.49,110.72,110.82,110.82,110.75,110.71,110.86,110.84,110.84,110.84,110.92,111.46,112.46,113.04,113.15,113.15,113.21,113.37,113.47,113.71,113.71,113.71,113.8,115.46,117,117.94,118.08,118.08,118.47,118.49,118.45,118.54,118.55,118.55,118.55,119.04,121.37,122,122.14,122.14,122.03,121.91,122.23,121.73,121.83,121.83,122.49,123.02,125.98,126.13,126.39,126.39,126.57,126.87,127.26,126.82,126.7,126.7,126.7,128.53,130.37,130.39,130.65,130.65,130.65,130.85,130.89,130.85,131.6,131.6,131.6,132.53,133.05,133.49,133.46) Error: object 'Lederenlaarzen' not found Execution halted