Hi !! How are you ? Fines, I hope. Well, I'm using this function: hclust(dist(x), "ave); Where x is a table with my data. So, when I execute this, I was getting this error: "NA/NaN/Inf in foreign function call" I discovered this error was generated because in my labels data there was a ' (single quote). I removed this characters, in all ocorrencies, and the errors stopped. I would want to know if there are others characters that would generate this some problem... Thanks a lot and so sorry for my bad English. Regards, Leandro Yahoo! Mail - 6MB, anti-spam e antiv?rus gratuito. Crie sua conta agora: http://mail.yahoo.com.br