no applicable method for 'predict' applied to an object of class "c('randomForest.formula', 'randomForest')"

[boral]

Trying to replicate the example provided here : https://ema.drwhy.ai/breakDown.html

Facing the following error : no applicable method for 'predict' applied to an object of class "c('randomForest.formula', 'randomForest')"

Code

rm(list = ls() )

titanic_imputed <- archivist::aread("pbiecek/models/27e5c")
titanic_rf <- archivist:: aread("pbiecek/models/4e0fc")
(henry <- archivist::aread("pbiecek/models/a6538"))

explain_rf <- DALEX::explain(model = titanic_rf,  
                             data = titanic_imputed[, -9],
                             y = titanic_imputed$survived == "yes", 
                             label = "Random Forest")

bd_rf <- predict_parts(explainer = explain_rf,
                       new_observation = henry,
                       type = "break_down")

[maksymiuks]

Hi @boral

It looks like you don't have the randomForest R package installed. Try installing it from CRAN, and then load it to register S3 methods. One way of loading the package is simply attaching it but running library("randomForest"). Then, the above code should work without any problems.