Hi all, I'm having this simple error, since I'm working with a data matrix I don't understand what's happening; I've tried several ways to solve this, even working with sparse matrix, but nothing seems to solve it.> model<-svm(scale=TRUE,type=C,x=dados1,y=dados2,kernel=RBF)Error in as.character(x) : cannot coerce to vector Best regards, Pedro Marques