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...yntax: poLCA(formula, data) and needs the following formula definition: formula <- cbind(V1,V2,V3,...) So far so good. What I tried now was the following: #Get "data" with the "read.table" fuction data <- read.table("d:/ .....) #Select cols to use in the analysis aktDat <- data[2:15] #get the names names(aktDat) #put them together in one string, comma as separation sign bi <- paste(names(aktDat),collapse=",") #use this string in the "f" function to bind the variables formula <- cbind(bi)~1 #Calculate the modell poLCA(formula, data) bu...