Hi you are coming from different language paradigm?
Although you did not provide your data I presume you have data frame called data with columns SP, A1-A5 Your construction data[1:n, "A1"]<- data$A1 <-1 seems to me rather strange and basically your cycle shall do data$A1<-data$A2<-data$A3<-data$A4<-data$A5<-data$SP or if your columns were suitably located data[,1:5] <- data$SP If you want something else you shall provide some working example. Regards Petr > Hi, > > I cannot get rid of this error message: > > "Warning messages: > 1: In if (data$SP == 1) { : > the condition has length > 1 and only the first element will be used > 2: In if (data$SP == 1) { : > the condition has length > 1 and only the first element will be used > 3: In if (data$SP == 1) { : > the condition has length > 1 and only the first element will be used > > data$A5 > [1] 1 1 1" > > The loop seems to be stuck within the first loop. I have data (in .csv > format) witch contains one example of each SP within the data, so the > output should look like "123" instead of "111". This example is simplified > version just to give you the idea of the problem. What is wrong within my > code? I have tried everything imaginable and cannot figure it out. > > for (i in 1:n) { > if (data$SP==1){ > data[1:n, "A1"]<- data$A1 <-1 > data[1:n, "A2"]<- data$A2 <-1 > data[1:n, "A3"]<- data$A3 <-1 > data[1:n, "A4"]<- data$A4 <-1 > data[1:n, "A5"]<- data$A5 <-1} > else if(data$SP==2){ > data[1:n, "A1"]<- data$A1 <-2 > data[1:n, "A2"]<- data$A2 <-2 > data[1:n, "A3"]<- data$A3 <-2 > data[1:n, "A4"]<- data$A4 <-2 > data[1:n, "A5"]<- data$A5 <-2} > else if(data$SP==3){ > data[1:n, "A1"]<-data$A1 <-3 > data[1:n, "A2"]<-data$A2 <-3 > data[1:n, "A3"]<-data$A3 <-3 > data[1:n, "A4"]<-data$A4 <-3 > data[1:n, "A5"]<-data$A5 <-3} > > } > > -Tiff > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.