Method summary

stats.go:183–249

(a []string)

}

func (s *DiscreteStats) summary(a []string) {
	s.data = a
	s.count = len(a)

	// Count empty/missing values
	s.missing = 0
	s.counter = make(map[string]int)

	for _, row := range a {
		if row == "" {
			s.missing++
		}
		s.counter[row]++
	}

	s.unique = len(s.counter)

	type kv struct {
		Key   string
		Value int
	}

	// Sort map by value (frequency)
	var ss []kv
	for k, v := range s.counter {
		ss = append(ss, kv{k, v})
	}

	sort.Slice(ss, func(i, j int) bool {
		return ss[i].Value > ss[j].Value
	})

	// Build summary with overview first
	s.summaryData = [][]string{
		{"Total values", I2S(s.count)},
		{"Unique values", I2S(s.unique)},
		{"Empty/Missing", I2S(s.missing)},
		{"", ""},
		{"Value", "Frequency"},
		{"─────", "─────────"},
	}

	// Add top values (limit to prevent excessive display)
	maxDisplay := 50
	for i, kv := range ss {
		if i >= maxDisplay {
			remaining := len(ss) - maxDisplay
			s.summaryData = append(s.summaryData, []string{"...", "(" + I2S(remaining) + " more)"})
			break
		}

		displayKey := kv.Key
		if displayKey == "" {
			displayKey = "(empty)"
		}
		// Truncate very long values
		if len(displayKey) > 40 {
			displayKey = displayKey[:37] + "..."