I'm getting this error: "Error in MOPrice$Date : $ operator is invalid for atomic vectors"
The cost is: subset(MOPrice, as.Date(MOPrice$Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d")) The date column looks like: "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" -- View this message in context: http://r.789695.n4.nabble.com/Subset-error-on-atomic-vectors-why-tp4688051.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.