Event count(const events_t & events) {
if (events.empty()) {
return {};
}
return events.front().copy().set_metric(events.size())
.set_time(max_time(events));
}
Event mean(const events_t & events) {
if (events.empty()) {
return {};
}
Event e(events.front());
e.set_metric_d(reduce(sum_fn, events) / events.size());
e.set_time(max_time(events));
return e;
}
Event maximum(const events_t & events) {
if (events.empty()) {
return {};
}
double max = events[0].metric();
for (const auto & e: events) {
auto tmp = e.metric();
if (tmp > max) {
max = tmp;
}
}
Event e(events.front());
e.set_metric_d(max);
e.set_time(max_time(events));
return e;
}
Event minimum(const events_t & events) {
if (events.empty()) {
return {};
}
double min = metric_to_double(events[0]);
for (const auto & e: events) {
auto tmp = metric_to_double(e);
if (tmp < min) {
min = tmp;
}
}
Event e(events.front());
e.set_metric_d(min);
e.set_time(max_time(events));
return e;
}