if o.OutputUnit != "minimum" || len(g.Nodes) == 0 {
		return
	}
	var minValue int64

	for _, n := range g.Nodes {
		nodeMin := abs64(n.FlatValue())
		if nodeMin == 0 {
			nodeMin = abs64(n.CumValue())
		}
		if nodeMin > 0 && (minValue == 0 || nodeMin < minValue) {
			minValue = nodeMin
		}
	}
	maxValue := rpt.total
	if minValue == 0 {
		minValue = maxValue
	}

	if r := o.Ratio; r > 0 && r != 1 {