public override PhiAccrualState Actual()
{
return(new PhiAccrualState()
{
History = HeartbeatHistory.Apply(_sampleSize.Get)
});
}
public void StatisticsForHeartbeats_must_calculate_correct_mean_and_variance()
{
var samples = new[] { 100L, 200L, 125L, 340L, 130L };
var stats = samples.Aggregate(HeartbeatHistory.Apply(20), (current, stat) => current + stat);
ShouldBe(stats.Mean, 179.0D, 0.00001);
ShouldBe(stats.Variance, 7584.0D, 0.00001);
}
public Player()
{
Heartbeat starthb = new Heartbeat(0, DateTime.Now);
List <Heartbeat> history = new List <Heartbeat>();
HeartbeatHistory = history;
HeartbeatHistory.Add(starthb);
HeartbeatLatest = starthb;
}
public void StatisticsForHeartbeats_must_be_capped_by_the_specified_maxSampleSize()
{
var history3 = HeartbeatHistory.Apply(3) + 100 + 110 + 90;
ShouldBe(history3.Mean, 100.0D, 0.00001D);
ShouldBe(history3.Variance, 66.6666667D, 0.00001D);
var history4 = history3 + 140;
ShouldBe(history4.Mean, 113.333333D, 0.00001D);
ShouldBe(history4.Variance, 422.222222D, 0.00001D);
var history5 = history4 + 80;
ShouldBe(history5.Mean, 103.333333D, 0.00001D);
ShouldBe(history5.Variance, 688.88888889D, 0.00001D);
}
public async void StartReadingHeartRate()
{
var services = await Sensor.GetServicesAsync();
foreach (var service in services)
{
if (service.Name == "Heart Rate")
{
var chars = await service.GetCharacteristicsAsync();
var descs = await chars[0].GetDescriptorsAsync();
await chars[0].StartUpdatesAsync();
Heartbeat hb;
chars[0].ValueUpdated += (s, e) =>
{
hb = new Heartbeat(e.Characteristic.Value[1], DateTime.Now);
HeartbeatHistory.Add(HeartbeatLatest);
HeartbeatLatest = hb;
Console.WriteLine("Hartslag: " + hb.HeartRate);
};
}
}
}
public void StatisticsForHeartbeats_must_have_zero_variance_for_one_sample()
{
var history = HeartbeatHistory.Apply(600) + 1000L;
ShouldBe(history.Variance, 0.0, 0.00001D);
}
