Thanks Bart and Peter for your help and the example is working for c chart as well withut any error. But when I am plotting the R chart i am still getting the following error. Error in limits.R(center = 62614.0571428571, std.dev = NA_real_, sizes = c(1000L, : group size must be less than 51 when giving nsigmas
I will just explain my example used for plotting R chart. I have around 35 groups and and each group has a sample size of 1000. I want to know whether sample size for each group chosen to be 1000 is a problem. Please help me. -- View this message in context: http://n4.nabble.com/problems-with-SPC-charts-in-R-tp1467901p1469800.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.
