Dear Frank, What you see isn't a "message" but the result returned by sapply(). The ?s indicate that sapply() didn't know what to do with the corresponding element. In an individual use of source(), the result, a 2-element list, is returned invisibly, so you don't see it.
To see what's going on, try res <- lapply(pathnames, FUN = source) str(res) I hope this helps, John ----------------------------- John Fox, Professor McMaster University Hamilton, Ontario Canada L8S 4M4 Web: socserv.mcmaster.ca/jfox > -----Original Message----- > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Frank S. > Sent: July 29, 2016 6:52 AM > To: r-help@r-project.org > Subject: [R] Strange message after reading multiple scripts from one folder > > Dear list, > > I have one folder named "scripts_JMbayes", wich contains 10 R scripts. > I can read them properly by doing: > > > pathnames <- list.files(pattern="[.]R", path="Mydir/scripts_JMbayes", > > full.names = TRUE) sapply(pathnames, USE.NAMES = FALSE, FUN = source,) > > However, R generates the following message: > > [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] > value ? ? ? ? ? ? ? ? ? ? > visible FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > > What does it mean and what should I change to avoid this message? > Any help would be appreciated! > > Best, > > Frank > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.
