code: func NewLinearHist(min, max float64, nbins int) *LinearHist {
  	delta := float64(nbins) / (max - min)
  	return &LinearHist{min, max, delta, 0, 0, make([]uint, nbins)}
  }
docs: // NewLinearHist returns an empty histogram with nbins uniformly-sized
  // bins spanning [min, max].