Some Scala Transpose Experiments.

NWayMerge.scala

import scala.annotation.tailrec
import scala.collection.mutable.ListBuffer

case class Priceable(id: String,measure:String,value: Double)

val results=Seq(
  Priceable("$APPL","PV",311.0),
  Priceable("$APPL","Growth",3.0),
  Priceable("$IBM","PV",100),
  Priceable("$IBM","Growth",0.5),
  Priceable("$ORCL","PV",45.3),
  Priceable("$ORCL","Growth",2.0)
)
val grouped=results.groupBy(_.id)
val name=grouped.head._1
val base=grouped.get(name).get.map(p=>Seq(p.measure,p.id,p.value))
val others=grouped.filterKeys(_!=name).values.map(k=>k.map(p=>Seq(p.id,p.value)))
val entries=Seq(base,merge(others))
merge(entries = entries)
def merge(entries:Iterable[Seq[Seq[Any]]]):Seq[Seq[Any]] = {
  val entryArray = entries.toArray
  for (i <- Array.range(0, entries.head.size)) yield {
    val lb = new ListBuffer[Seq[Any]]
    for (entry <- entryArray)
        lb+=entry(i)
    lb.flatten
  }
}