If I understand your problem correctly (as Milan has pointed out, sample data and code would help enormously) this should get you where you want:
unique( shopdata$name[ shopdata$employee > 10 ] ) If not, something is wrong from the outset (or with my understanding, but then ... see above)! Rgds, Rainer On Tuesday 16 October 2012 14:45:37 paladini wrote: > Hello everybody, > I've got a problem concerning the function unique. I have got a > data.frame "shopdata" with 1000 shop which were evaluated at different > points in time. > > With function subset I chose those shops with more then 10 employee and > store it in data.frame "bigshopdata" with 700 shops. > bigshopdata=subset(shopdata, shopdata$employee>10) > > Now I use unique(bigshopdata$name) to ensure that each shop name is > only listed ones and not two or three times because of an evaluation at > different dates. > > What happens is that unique eliminates also those shops names which > appear only ones in bigshopdata but twice or more often in shopdata. > > > But that is not what I want to. I'm only interessted in multiple > appearance in bigshopdata not in an possible multible appearance in the > original data.farme. > > > How can I use unique to get what I want? Or is there an alternative > function? > > > I hope I explained the problem good enought. > > Best regards > > > Claudia > > ______________________________________________ > [email protected] 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. - - - - - Boycott Apple! http://i.eatliver.com/2012/9362.jpg http://blogs.computerworlduk.com/simon-says/2012/09/iphone-5-misses-standardisation-opportunity/index.htm ______________________________________________ [email protected] 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.
