Hello R-User! I have a data.frame with 82 variables (columns) and 290 rows. The variables are set to classes factor, ordered factor and numeric. I used the following code Matrix.My.data<-as.matrix(Df.My.Data[2:82]) Matrix.My.data.rcorr<-rcorr(Matrix.My.data, type="spearman") and got the following message: Fehler in storage.mode(x) <- if (.R.) "double" else "single" : (list) Objekt kann nicht nach 'double' umgewandelt werden Error Fehler in storage.mode(x) <- if (.R.) "double" else "single" : (list) object can not be altered into 'double'. Can somebody tell me what is going wrong with my code? Many thanks in advance. B. ----- The art of living is more like wrestling than dancing. (Marcus Aurelius) -- View this message in context: http://www.nabble.com/Sperman-Correlation-with-rcorr-%28Hmisc%29-tp18758029p18758029.html Sent from the R help mailing list archive at Nabble.com.