the problem here is more about scala than openmole, I need to calculate the mean and variance of a vector. Here is a working code for this :
val meanAndVar = ScalaTask("""val meanValue = doubleValue.sum/doubleValue.size doubleValue = doubleValue.map(_ - meanValue) doubleValue = doubleValue.map(math.pow(_, 2)) val varValue = doubleValue.sum/doubleValue.size """) set ( inputs += VectorValue, outputs += (meanValue, varValue) )
As you can see it’s not very good, I’m doing three iterations over the doubleValue vector and I’m certain I can do it in only one (using an accumulator or something like this ?) but scala and functional programming/lambda calculus are really not my area of expertise.
Does someone know where to find such a code or how to achieve this task in a better way?