Dear R-experts, Here below my R code with an error message. Can somebody help me to fix this error? Really appreciate your help.
Best, ############################################################ # MSE CROSSVALIDATION Lasso regression library(glmnet) x1=c(34,35,12,13,15,37,65,45,47,67,87,45,46,39,87,98,67,51,10,30,65,34,57,68,98,86,45,65,34,78,98,123,202,231,154,21,34,26,56,78,99,83,46,58,91) x2=c(1,3,2,4,5,6,7,3,8,9,10,11,12,1,3,4,2,3,4,5,4,6,8,7,9,4,3,6,7,9,8,4,7,6,1,3,2,5,6,8,7,1,1,2,9) y=c(2,6,5,4,6,7,8,10,11,2,3,1,3,5,4,6,5,3.4,5.6,-2.4,-5.4,5,3,6,5,-3,-5,3,2,-1,-8,5,8,6,9,4,5,-3,-7,-9,-9,8,7,1,2) T=data.frame(y,x1,x2) z=matrix(c(x1,x2), ncol=2) cv_model=glmnet(z,y,alpha=1) best_lambda=cv_model$lambda.min best_lambda # Create a list to store the results lst<-list() # This statement does the repetitions (looping) for(i in 1 :1000) { n=45 p=0.667 sam=sample(1 :n,floor(p*n),replace=FALSE) Training =T [sam,] Testing = T [-sam,] test1=matrix(c(Testing$x1,Testing$x2),ncol=2) predictLasso=predict(cv_model, newx=test1) ypred=predict(predictLasso,newdata=test1) y=T[-sam,]$y MSE = mean((y-ypred)^2) MSE lst[i]<-MSE } mean(unlist(lst)) ################################################################## ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.