values = append(values, s.Label[k]...)
	numLabels := s.NumLabel[k]
	numUnits := s.NumUnit[k]
	if len(numLabels) != len(numUnits) && len(numUnits) != 0 {
		return values
	}
	for i, numLabel := range numLabels {
		var value string
		if len(numUnits) != 0 {
			value = measurement.ScaledLabel(numLabel, numUnits[i], outputUnit)
		} else {
			value = measurement.ScaledLabel(numLabel, "", "")
		}
		values = append(values, value)

		Label:    make(map[string][]string, len(src.Label)),
		NumLabel: make(map[string][]int64, len(src.NumLabel)),
		NumUnit:  make(map[string][]string, len(src.NumLabel)),
	}
	for i, l := range src.Location {
		s.Location[i] = pm.mapLocation(l)
	}
	for k, v := range src.Label {
		vv := make([]string, len(v))
		copy(vv, v)
		s.Label[k] = vv
	}
	for k, v := range src.NumLabel {
		u := src.NumUnit[k]

	Label map[string][]string
	// NumLabel is a per-label-key map to values for numeric labels. See a note
	// above on handling multiple values for a label.
	NumLabel map[string][]int64
	// NumUnit is a per-label-key map to the unit names of corresponding numeric
	// label values. The unit info may be missing even if the label is in
	// NumLabel, see the docs in profile.proto for details. When the value is

		Label:    make(map[string][]string, len(src.Label)),
		NumLabel: make(map[string][]int64, len(src.NumLabel)),
		NumUnit:  make(map[string][]string, len(src.NumLabel)),
	}
	for i, l := range src.Location {
		s.Location[i] = pm.mapLocation(l)
	}
	for k, v := range src.Label {
		vv := make([]string, len(v))
		copy(vv, v)
		s.Label[k] = vv
	}
	for k, v := range src.NumLabel {
		u := src.NumUnit[k]

				{ID: 1, Mapping: map1, Address: addr1},
				{ID: 2, Mapping: map2, Address: addr2},
			},
			NumLabel: map[string][]int64{"bytes": {1024}},
		},
		{
			Value: []int64{1, 829411, 1, 829411},
			Location: []*profile.Location{
				{ID: 3, Mapping: map2, Address: addr2 + 1},
				{ID: 4, Mapping: map2, Address: addr2 + 2},
			},
			NumLabel: map[string][]int64{"bytes": {512 * 1024}},
		},
		{
			Value: []int64{1, 829411, 0, 0},

		}
		if wantKey == "" {
			return func(s *profile.Sample) bool {
				for key, vals := range s.NumLabel {
					if labelFilter(vals, numLabelUnit(key)) {
						return true
					}
				}
				return false
			}, nil
		}
		return func(s *profile.Sample) bool {
			if vals, ok := s.NumLabel[wantKey]; ok {
				return labelFilter(vals, numLabelUnit(wantKey))
			}
			return false
		}, nil
	}

		for _, val := range vals {
			if ignore != nil && ignore(key, val, 0) {
				im = true
			}
			if !fm && focus(key, val, 0) {
				fm = true
			}
		}
	}
	for key, vals := range s.NumLabel {
		for _, val := range vals {
			if ignore != nil && ignore(key, "", val) {
				im = true
			}
			if !fm && focus(key, "", val) {
				fm = true
			}
		}
	}
	return fm, im

					Label{
						keyX: addString(strings, k),
						strX: addString(strings, v),
					},
				)
			}
		}
		var numKeys []string
		for k := range s.NumLabel {
			numKeys = append(numKeys, k)
		}
		sort.Strings(numKeys)
		for _, k := range numKeys {
			vs := s.NumLabel[k]
			for _, v := range vs {
				s.labelX = append(s.labelX,
					Label{
						keyX: addString(strings, k),
						numX: v,
					},
				)
			}

						strX: addString(strings, v),
					},
				)
			}
		}
		var numKeys []string
		for k := range s.NumLabel {
			numKeys = append(numKeys, k)
		}
		sort.Strings(numKeys)
		for _, k := range numKeys {
			keyX := addString(strings, k)
			vs := s.NumLabel[k]
			units := s.NumUnit[k]
			for i, v := range vs {
				var unitX int64
				if len(units) != 0 {
					unitX = addString(strings, units[i])

		return !matchShow || matchHide
	}
	for _, s := range p.Sample {
		for lab := range s.Label {
			if matchRemove(lab) {
				delete(s.Label, lab)
			}
		}
		for lab := range s.NumLabel {
			if matchRemove(lab) {
				delete(s.NumLabel, lab)
			}
		}
	}
	return
}

// matchesName returns whether the location matches the regular
// expression. It checks any available function names, file names, and