dose anybody know In "cv.glmnet" object say fit=cv.glmnet(x,y) what is matrix "x", if it is a data frame or something else thanks a lot -- View this message in context: http://r.789695.n4.nabble.com/cv-glmnet-object-tp4514236p4514236.html Sent from the R help mailing list archive at Nabble.com.