找不到火车默认对象“ rf.label”中的错误

Question

当我尝试运行以下代码时

set.seed(34324)
rf.5.cv.1 <- train(rf.train.5, rf.label, method = "rf", tuneLength = 3,ntree = 1000, trControl = ctrl.1)

rf.label是使用此行代码创建的

rf.lable <- as.factor(train$Survived)