Method: NArray#rms

Defined in:
lib/narray_ext.rb

#rms(*ranks) ⇒ Object 



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# File 'lib/narray_ext.rb', line 81

def rms(*ranks)
  if integer?
    a = self.to_type(NArray::DFLOAT)
  else
    a = self
  end
  a = NArray.ref(a)
  n = rank_total(*ranks)
  if complex?
    NMath::sqrt( (a.abs**2).sum(*ranks)/n )
  else
    NMath::sqrt( (a**2).sum(*ranks)/n )
  end
end