linux - predict function not working on R -


i creating random forest in local desktop , saving model , loading in remote linux machine. following code chunk

iris.rf <- randomforest(species ~ ., data=iris, ntree=11) save(iris.rf, file = "mymodel.rda")

on linux machine: 

load(file="mymodel.rda") out <- predict(iris.rf,data.frame(sepal_length=1,sepal_width=2,petal_length=3,petal_width=4))

when predicting getting following error

error in usemethod("predict") : no applicable method 'predict' applied object of class "c('randomforest.formula', 'randomforest')"

the random forest model has been loaded in environment reason predict call on model not working. idea why not working?


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