Hi fellow R Users, I find that I typically rewrite my data specific to data in columns, which is by no means efficient and I am struggling to break out of this bad habit and utalise some of the excellent things R can do! I have tried to look at 'for' but I don't really follow it, and I wondered if anyone could help with a simple example using my script so I could follow this and build on it, so for example, wanting to change an ID code from alphanumeric to numeric. The example below works, but takes ages, given I have a lot of IDs, to do manually!
Any thoughts on how to create a loop to go through each ID and give them a unique number would be most welcome! Cheers, Ross levels(dat.ID$ID2)[levels(dat.ID$ID2)=='A1']<-1 levels(dat.ID$ID2)[levels(dat.ID$ID2)=='A2']<-2 levels(dat.ID$ID2)[levels(dat.ID$ID2)=='D1']<-3 levels(dat.ID$ID2)[levels(dat.ID$ID2)=='D2']<-4 levels(dat.ID$ID2)[levels(dat.ID$ID2)=='D4']<-5 levels(dat.ID$ID2)[levels(dat.ID$ID2)=='D5']<-6 levels(dat.ID$ID2)[levels(dat.ID$ID2)=='D6']<-7 -- View this message in context: http://r.789695.n4.nabble.com/Simple-loop-code-tp2075322p2075322.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.
