I use the ff-package for large data and have good success in session. To ensure my data is available for the next R session, I save my workspace and use the /ffsave/ command to archive my large data objects. Syntax is simple:
> ffsave(file="~/path/archiveName", list="objectName") when I have multiple files to save, the list is expanded using c(). When I start a new R session, I load the ff-package again and use /ffload/ to retrieve my data. Syntax is simple: > ffload(file="~/path/archiveName", list="objectName") If my workspace is emply, I can see the object enter. However, when I wish to interrogate the object, it appears that I have no physical connection to the data: > objectName ff (deleted) double length=21024 (21024) dim=c(73,144,2) dimorder=c(1,2,3) > open(objectName) Error: file.access(filename, 0) == 0 is not TRUE In simple words, my data is no longer usable...WHY? This shouldn't be so hard! -- View this message in context: http://r.789695.n4.nabble.com/HELP-ff-package-tp4632949.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.
