-private class CounterSorter[E: Object]
- super AbstractSorter[E]
- var counter: Counter[E]
- redef fun compare(a,b) do return self.counter.map[a] <=> self.counter.map[b]
+# A Metric that collects float datas
+#
+# Used sor summarization
+class FloatMetric
+ super Metric
+
+ redef type VAL: Float
+
+ protected var values_cache = new HashMap[ELM, VAL]
+ redef fun values do return values_cache
+
+ redef fun clear do values_cache.clear
+
+ fun sum: Float do
+ var sum = 0.0
+ for v in values.values do sum += v
+ return sum
+ end
+
+ redef fun max do
+ assert not values.is_empty
+ var max: nullable Float = null
+ var elem: nullable ELM = null
+ for e, v in values do
+ if max == null or v > max then
+ max = v
+ elem = e
+ end
+ end
+ return elem.as(not null)
+ end
+
+ redef fun min do
+ assert not values.is_empty
+ var min: nullable Float = null
+ var elem: nullable ELM = null
+ for e, v in values do
+ if min == null or v < min then
+ min = v
+ elem = e
+ end
+ end
+ return elem.as(not null)
+ end
+
+ redef fun avg do
+ if values.is_empty then return 0.0
+ return sum / values.length.to_f
+ end
+
+ redef fun std_dev: Float do
+ var sum = 0.0
+ for value in values.values do
+ sum += (value - avg).pow(2.to_f)
+ end
+ return (sum / values.length.to_f).sqrt
+ end
+
+ redef fun above_threshold do
+ var above = new HashSet[ELM]
+ var threshold = threshold
+ for element, value in values do
+ if value > threshold then above.add(element)
+ end
+ return above
+ end
+
+ redef fun to_console(indent, colors) do
+ super
+ if colors then
+ print "{"\t" * indent} sum: {sum}".light_gray
+ else
+ print "{"\t" * indent} sum: {sum}"
+ end
+ end
+