How do I run the Spark decision tree with a categorical feature set using Scala?

Question

I have a feature set with a corresponding categoricalFeaturesInfo: Map[Int,Int]. However, for the life of me I cannot figure out how I am supposed to get the DecisionTree class

Answer 1

You need to confirm the type of array x. From the error log, it said that the item in array x is string which is not supported in spark. Current spark Vectors can only be filled by Double.