Hi, Suppose I have a categorical variable called STREET, and I have 30 levels for it (i.e. 30 different streets). I want to find all those streets with only 15 observations or below then collapse them into a level called OTHER. Is there a quick way, other than using a for() loop, to do it? Currently what I'm doing is something like: ### Collapse STREET (those < 15) st <- c() STREET <- as.vector(STREET) for(i in 1:length(STREET)) { if(STREET[i] == "BOYNE AVE" || STREET[i] == "CHAPEL ST" || STREET[i] == "CONE PL" || STREET[i] == "LACEBARK LANE" || STREET[i] == "PRUDHOE LANE" || STREET[i] == "VIRGIL PL" || STREET[i] == "WILMOT ST" ) st[i] <- "Other" else st[i] <- STREET[i] }
But I'm sure there is a better way.... Kevin -------------------------------------------- Ko-Kang Kevin Wang, MSc(Hon) Statistics Workshops Co-ordinator Student Learning Centre University of Auckland New Zealand ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html