?subset problems <- c( "Water damage", "Water off", "water pipes damaged", "leaking water")
damaged <- subset(house_info, house_info[,1]==problems[1] | house_info[,1]==problems[2] | house_info[,1]==problems[3] | house_info[,1]==problems[4]) or am I misunderstanding the question? or perhaps %in% which probably does the job more elegantly but I forget the syntax at the moment. --- On Fri, 9/25/09, Jason Rupert <jasonkrup...@yahoo.com> wrote: > From: Jason Rupert <jasonkrup...@yahoo.com> > Subject: [R] grep or other complex string matching approach to capture > necessary information... > To: R-help@r-project.org > Received: Friday, September 25, 2009, 1:58 PM > Say I have the following data: > > > house_number<-floor(runif(100, 200, 600)) > water_evaluation<-c("No water damage", "Water damage", > "Water On", "Water off", "water pipes damaged", "leaking > water") > water_evaluation_selection<-floor(runif(100, 1,6)) > house_info<-data.frame(water_evaluation[water_evaluation_selection], > > house_number) > > And, that I only want to pull out the ones with negative > water evaluations, i.e. Water damage, water pipes damaged, > and leaking water. > > Should/could I use grep in order to pull the house numbers > out of house_info with those negative water > evaluations? > > I guess I want to know the house numbers from house_info > where the water evaluation is negative. Is there a way > to use grep or another R function in order to acquire that > information? > > Thank you again in advance for any insights. > > ______________________________________________ > 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. > __________________________________________________________________ Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All ______________________________________________ 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.