Try this: factor(dat.ID$ID2, labels = 1:7)
On Thu, Apr 29, 2010 at 8:39 AM, RCulloch <ross.cull...@dur.ac.uk> wrote: > > Hi fellow R Users, > > I find that I typically rewrite my data specific to data in columns, which > is by no means efficient and I am struggling to break out of this bad habit > and utalise some of the excellent things R can do! I have tried to look at > 'for' but I don't really follow it, and I wondered if anyone could help > with > a simple example using my script so I could follow this and build on it, so > for example, wanting to change an ID code from alphanumeric to numeric. The > example below works, but takes ages, given I have a lot of IDs, to do > manually! > > Any thoughts on how to create a loop to go through each ID and give them a > unique number would be most welcome! > > Cheers, > > Ross > > > levels(dat.ID$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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[alternative HTML version deleted]]
______________________________________________ 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.
