Kuno, thanks for your note. I don't know of an equivalent function out of the box, but if you want to get the indices where a condition is true you could try something in Scala like:
myList.zipWithIndex.collect { case (item, index) if item > 1 => index } Hope this is helpful. On Wed, Jun 10, 2020 at 2:53 AM Baeriswyl Kuno SBB CFF FFS (Extern) < kuno.baeris...@sbb.ch> wrote: > Hi all, > > I've pumped into the Mahout, because I need to migrate a R Script > including matric algebra to Spark Cluster. > > Mahouts Scala/Spark Binding provides all of the operations, except of > logical subsetting. > > Example: > > x1 = c(1.0,4.0,2.0,5.0) > x2 = c(0,0,0,0) > x2[x1 > 1] = 2 > > Would set value 2 to return Row 2,3 and 4. > > Is there an equivalent function in Mahout? > > > Thanks. > > Kuno > >