/// <summary>
/// Calculates the statistics of a single train journey,
/// typically used for the simualtion statistics.
/// </summary>
/// <param name="trains">A single train object.</param>
/// <returns>A statistics object containing statistical information about the train.</returns>
public static TrainStatistics generateStats(Train train)
{
TrainStatistics stats = new TrainStatistics();
if (train.journey.Where(t => t.speed > 0).Count() == 0)
{
return(stats);
}
stats.Category = train.Category.ToString() + " " + train.trainDirection.ToString();
/* Extract the number of trains in the list */
stats.numberOfTrains = 1;
/* Calculate the distance travelled for each train */
double distanceTravelled = 0;
double averageSpeed = 0;
if (train.journey.Where(t => t.speed > 0).Count() > 0)
{
distanceTravelled = (train.journey.Where(t => t.speed > 0).Max(t => t.kilometreage) - train.journey.Where(t => t.speed > 0).Min(t => t.kilometreage));
/* Calculate the average speed of the train journey. */
averageSpeed = train.journey.Where(t => t.speed > 0).Average(t => t.speed);
}
/* Populate the averages. */
stats.averageSpeed = averageSpeed;
stats.averageDistanceTravelled = distanceTravelled;
stats.averagePowerToWeightRatio = train.powerToWeight;
/* Because there is only one train, the standard deviation is not relevant. */
stats.standardDeviationP2W = 0;
return(stats);
}
/// <summary>
/// Calculates the statistics of the list of trains passed in.
/// </summary>
/// <param name="trains">A list of train objects.</param>
/// <returns>A statistics object containing statistical information about the trains.</returns>
public static TrainStatistics generateStats(List <Train> trains)
{
TrainStatistics stats = new TrainStatistics();
if (trains.Count() == 0)
{
return(stats);
}
else
{
stats.Category = trains[0].Category.ToString() + " " + trains[0].trainDirection.ToString();
/* Extract the number of trains in the list */
stats.numberOfTrains = trains.Count();
List <double> distance = new List <double>();
List <double> speed = new List <double>();
List <double> power2Weight = new List <double>();
/* Cycle through all the trains. */
foreach (Train train in trains)
{
/* Calculate the distance travelled for each train */
double distanceTravelled = 0;
if (train.journey.Where(t => t.speed > 0).Count() > 0)
{
distanceTravelled = (train.journey.Where(t => t.speed > 0).Max(t => t.kilometreage) - train.journey.Where(t => t.speed > 0).Min(t => t.kilometreage));
/* Calculate the average speed of the train journey. */
speed.Add(train.journey.Where(t => t.speed > 0).Average(t => t.speed));
}
distance.Add(distanceTravelled);
/* Add the power to weight ratio to the list. */
power2Weight.Add(train.powerToWeight);
}
/* Calculate the averages. */
if (speed.Count() > 0)
{
stats.averageSpeed = speed.Average();
}
else
{
stats.averageSpeed = 0;
}
if (distance.Count() > 0)
{
stats.averageDistanceTravelled = distance.Average();
}
else
{
stats.averageDistanceTravelled = 0;
}
if (power2Weight.Count() > 1)
{
stats.averagePowerToWeightRatio = power2Weight.Average();
double sum = power2Weight.Sum(p => Math.Pow(p - stats.averagePowerToWeightRatio, 2));
/* Calculate the standard deviation of the power to weight ratios. */
stats.standardDeviationP2W = Math.Sqrt(sum / (power2Weight.Count() - 1));
}
else
{
stats.averagePowerToWeightRatio = 0;
stats.standardDeviationP2W = 0;
}
}
return(stats);
}
