On Tue, 14 Sep 2021, Bert Gunter wrote:
Input problems of this sort are often caused by stray or extra characters (commas, dashes, etc.) in the input files, which then can trigger automatic conversion to character. Excel files are somewhat notorious for this.
Bert, Yes, I'm going to closely review the original data file and work forward from there. Thanks for your comments; I do appreciate them. Back when I have more information ... perhaps even a fix. Best regards, Rich ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.