It looks like there is an NA created, and then used to calculate stdev. But it's inside function, and these seems all wrapped functions, where one function calls another, which calls another, which calls ..... I suggest you contact the maintainer of the package, send him the data and your error. To find his e-mail address see ?qcc. (If you solved your problem, please let us know)
Bart -- View this message in context: http://n4.nabble.com/problems-with-SPC-charts-in-R-tp1467901p1471287.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.
