private void ScheduleNewArrivalEvent(TramStop stop)
{
var rates = _passengerRates.ToArray();
var arrivalRate = rates.Where(r => r.Route == stop.Route && r.Name == stop.Name && r.TimeEnd == _time + 900 - _time % 900).First();
if (Math.Abs(arrivalRate.RateIn) < 0.0001)
{
stop.GeneratingEvents = false;
return;
}
else
{
stop.GeneratingEvents = true;
}
var time = _time + RandomDistribution.GenerateNextPoisson(arrivalRate.RateIn);
if (stop.Route == 2)
{
rates = rates.Reverse().ToArray();
}
var routes = rates.Where(r => r.Route == stop.Route && r.TimeEnd == _time + 900 - _time % 900)
.SkipWhile(r => r.Name != stop.Name).Skip(1).ToArray();
var destination = routes[RandomDistribution.GenerateNextEmpirical(routes.Select(r => r.RateOut).ToArray())].Name;
ScheduleEvent(new PassengerArrivalEvent(time, destination), stop);
}
public int GetTimeToNextDestination()
{
// Use a Lognormal distribution to simulate driving times as per the fit on the Nieuwegeinlijn.
// The mean is set to the average driving time and the standard deviation is found to be 3.01% of the mean on average.
// The mean and standard deviation are logarithmic.
int time = RandomDistribution.GenerateNextLognormal((float)Math.Log(AvgTimeToNextDestination), (float)Math.Log(AvgTimeToNextDestination) * 0.0301f);
return(Math.Abs(time));
}
