How to cast a WrappedArray[WrappedArray[Float]] to Array[Array[Float]] in spark (scala)

Question

Im using Spark 2.0. I have a column of my dataframe containing a WrappedArray of WrappedArrays of Float.

An example of a row would be:

Answer 1

Try this:

  val wawa: WrappedArray[WrappedArray[Float]] = null 
  val res: Array[Array[Float]] = wawa.map(inner => inner.array).toArray

It compiles for me