Hi, i need to draw a plot with means of values, reading a table from datafile.
Example of datafile: Days Weight 0 178.00 0 250.00 0 242.00 0 239.00 0 223.00 0 188.00 0 237.00 0 212.00 0 273.00 0 191.00 0 173.00 0 233.00 0 227.00 0 253.00 0 232.00 4 177.00 4 249.00 4 241.00 4 238.00 4 222.00 4 188.00 4 236.00 4 211.00 4 272.00 4 190.00 4 172.00 4 232.00 4 226.00 4 252.00 4 231.00 if i use "plot(Weight~Days, data=la)" the result is this http://r.789695.n4.nabble.com/file/n3031068/weightm.jpg how can i draw a plot with means for each days? tnx for help :) -- View this message in context: http://r.789695.n4.nabble.com/mean-on-a-plot-tp3031068p3031068.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.