View VectorMean.scala
| import org.apache.spark.ml.linalg.SQLDataTypes.VectorType | |
| import org.apache.spark.ml.linalg.{Vector, Vectors} | |
| import org.apache.spark.sql.Row | |
| import org.apache.spark.sql.expressions.{MutableAggregationBuffer, UserDefinedAggregateFunction} | |
| import org.apache.spark.sql.types._ | |
| class VectorMean extends UserDefinedAggregateFunction { | |
| // This is the input fields for your aggregate function. |