public static Dictionary <string, float> ComputeAttraction(City city, TripRecordContext context)
{
Progress progress = new Progress(1000, context.Count);
Dictionary <string, float> attraction = new Dictionary <string, float>();
//Process
Console.WriteLine(">Processing Attraction Heat Map<");
progress.Start();
foreach (var date in context)
{
var trips = context.Get(date);
foreach (var trip in trips)
{
var region = city.FindRegion(trip.Pickup_Latitude, trip.Pickup_Longitude)?.UID;
if (region != null)
{
attraction[region] = attraction.GetOrCreate(region) + 1;
}
region = city.FindRegion(trip.Dropoff_Latitude, trip.Dropoff_Longitude)?.UID;
if (region != null)
{
attraction[region] = attraction.GetOrCreate(region) + 1;
}
}
progress.inc();
}
progress.Stop();
//Save
Console.WriteLine(">Saving Attraction Heat Map<");
File.WriteAllText(Path.Combine(NYCConst.Base_Dir, "Attraction.json"), JsonConvert.SerializeObject(attraction));
return(attraction);
}
static void ProcessTrips(TripRecordContext context, City nyc, Dictionary <DateTime, Weather> WeatherData)
{
bool processEdges = true;
bool processGlobals = true;
bool processNodes = true;
StreamWriter wNode = null;
StreamWriter wGlobal = null;
StreamWriter wEdge = null;
Progress progress;
Stopwatch stopwatch = new Stopwatch();
int edgeCounter = 0;
#region ProcessingTrips
Console.WriteLine(">Starting Process<");
stopwatch.Restart();
if (processNodes)
{
wNode = new StreamWriter(Path.Combine(Constants.Root_Dir, "node.csv"));
wNode.WriteLine(string.Join(',',
"ID", "LandUse",
"Population", "MedianIncome", "PopDensity", "BachelorHigher",
"Popularity", "Rating", "Places",
"OutFlow"));
}
if (processGlobals)
{
wGlobal = new StreamWriter(Path.Combine(Constants.Root_Dir, "global.csv"));
wGlobal.WriteLine(string.Join(',', "Month", "DayofWeek", "Period", "TempAvg", "Precipitation", "Snow"));
}
foreach (DateTime date in context)
{
var trips = context.Get(date);
var tripsByPeriod = trips.GroupBy(t => t.Period);
var weather = WeatherData[date];
Console.WriteLine(">Processing {0}", date);
progress = new Progress(1000, trips.Count());
progress.Start();
foreach (var period in tripsByPeriod)
{
//Count the number of pickups and dropoffs per zone
Dictionary <string, int> Pickups = new Dictionary <string, int>();
//Dictionary<string, int> Dropoffs = new Dictionary<string, int>();
Dictionary <Tuple <int, int>, int> EdgeFlow = new Dictionary <Tuple <int, int>, int>();
if (processEdges)
{
wEdge = new StreamWriter(Path.Combine(Constants.Root_Dir,
string.Format("Edges/edges_{0}.csv", edgeCounter++)));
wEdge.WriteLine(string.Join(',', "SenderID", "ReceiverID", "Distance", "InFlow"));
wEdge.AutoFlush = true;
}
#region FindContainingRegion
var sortedTrips = period.OrderBy(t => t.TimeStamp).ToArray();
//Find containing region for every trip record
foreach (var trip in sortedTrips)
{
if (trip.IsValid)
{
var pickupRegion = nyc.FindRegion(trip.Pickup_Latitude, trip.Pickup_Longitude);
var dropoffRegion = nyc.FindRegion(trip.Dropoff_Latitude, trip.Dropoff_Longitude);
//aggrigate pickup & dropoffcounts per region
if (pickupRegion != null && dropoffRegion != null)
{
Pickups[pickupRegion.UID] = Pickups.GetOrCreate(pickupRegion.UID) + 1;
//Dropoffs[dropoffRegion.UID] = Dropoffs.GetOrCreate(dropoffRegion.UID) + 1;
var edge = new Tuple <int, int>(pickupRegion.Idx, dropoffRegion.Idx); //nyc.GetEdge(pickupRegion, dropoffRegion);
EdgeFlow[edge] = EdgeFlow.GetOrCreate(edge) + 1;
}
}
progress.inc();
}
#endregion
#region SaveDataToFile
//Save Node results to file
if (processNodes)
{
foreach (var region in nyc)
{
/**
* NODE FIELDS:
* "ID", "LandUse",
* "Population", "MedianIncome", "PopDensity", "BachelorHigher", "Popularity", "Rating", "Places"
* "OutFlow"
*/
wNode.WriteLine(string.Join(',',
region.Idx, region.LandUse,
region.Population / NYCConst.TotalPopulation, region.MedianIncome, region.PopDensity, region.BachelorHigher,
region.Popularity, region.Rating, region.Places,
Pickups.GetOrCreate(region.UID)));
}
wNode.Flush();
}
//Save Edge results to file
if (processEdges)
{
foreach (var edge in EdgeFlow)
{
/**
* EDGE FIELD:
* "SenderID", "ReceiverID", "Distance", "InFlow"
*/
var dist = nyc.Distance(edge.Key.Item1, edge.Key.Item2) / 3280.84;
wEdge.WriteLine(string.Join(',', edge.Key.Item1, edge.Key.Item2, dist, edge.Value));
}
wEdge.Flush();
wEdge.Close();
}
//Save Global results to file
/**
* GLOBAL FIELD:
* "Month", "DayofWeek", "Period", "Temp Avg", "Precipitation", "Snow"
*/
if (processGlobals)
{
wGlobal.WriteLine(string.Join(',', date.Month, (int)date.DayOfWeek, period.Key,
weather.TempAvg, weather.Precipitation, weather.SnowDepth));
wGlobal.Flush();
}
#endregion
}
progress.Stop();
}
if (processGlobals)
{
wGlobal.Close();
}
if (processNodes)
{
wNode.Close();
}
Console.WriteLine("Execution Time: {0} Seconds\n", (float)stopwatch.ElapsedMilliseconds / 1000);
#endregion
}