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I'm having trouble achieving the results I want using a regular expression. I want to eliminate all characters that fall within square brackets as well as the brackets themselves, returning an "". I'm not sure if it's R's use of double slash escapes or something else that is tripping me up. If I only use one slash I get 1: '\[' is an unrecognized escape in a

I'm guessing there's a more efficient way to do the following using the index features of R. Appreciate any thoughts.... for (i in 1:nrow(dbs1)){ if(dbs1$Payor[i] %in% Payor.Group.Medicaid) dbs1$Payor.Group[i] = "Medicaid" if(dbs1$Payor[i] %in% Payor.Group.Medicare) dbs1$Payor.Group[i] = "Medicare" if(dbs1$Payor[i] %in% Payor.Group.Commercial) dbs1$Payor.Group[i] = "Commercial" if(dbs1$Payor[i] %in% Payor.Group.Workers.Comp) dbs1$Payor.Group[i] = "Workers Comp" if(dbs1$Payor[i] %in% Payor.Group.Self.Pay) dbs1$Payor.G...

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...re of fraud in finance, business and healthcare. Bring us your zeal and your data munging skills and we'll teach you how to be a writer, stock analyst and gumshoe investigator. We assemble unique data sets to scrutinize activities like Jim Cramer's CNBC stock picking, for-profit colleges, Medicare rip-offs and the hyping of US-listed China stocks. Our stories move stocks, achieving instant reform of bad situations. Please help us make Wall Street safe for the little guy. We will hire one or two programmer-journalist interns to work from June through August of 2012. Desirable skills woul...

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