private static IEnumerable <WeatherIncident> ParseWundergroundResponse(string airportCode, string responseString, DateTime date, WeatherIncidentType?typeToFilter)
{
var moreInfoUrl = new Uri(string.Format(WeatherHistoryUrl, airportCode, date.Year, date.Month, date.Day));
Airport currentAirpot = AirportList.GetAirport(airportCode);
var locationOfAirport = Address.Search(string.Empty, currentAirpot.City, currentAirpot.State.Abbreviation, string.Empty, false);
// Remove HTML comments and line breaks
responseString =
Regex.Replace(responseString, "<!--.*?-->", string.Empty, RegexOptions.Singleline).Replace("<br />", "");
IEnumerable <string> rows = responseString.Split(new[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
rows = rows.Skip(1); // Skip header row
var incidents = new List <WeatherIncident>();
foreach (string row in rows)
{
var entry = new WeatherUndergroundEntry(date, row);
WeatherIncidentType incidentType = WeatherIncidentClassifier.Classify(entry);
if (typeToFilter != null)
{
if (incidentType == typeToFilter)
{
incidents.Add(new WeatherIncident(locationOfAirport, incidentType,
date, moreInfoUrl));
}
}
else
{
if (incidentType != WeatherIncidentType.Unclassified)
{
incidents.Add(new WeatherIncident(locationOfAirport, incidentType,
date, moreInfoUrl));
}
}
}
return(incidents);
}
private static IEnumerable<WeatherIncident> ParseWundergroundResponse(string airportCode, string responseString, DateTime date, WeatherIncidentType? typeToFilter)
{
var moreInfoUrl = new Uri(string.Format(WeatherHistoryUrl, airportCode, date.Year, date.Month, date.Day));
Airport currentAirpot = AirportList.GetAirport(airportCode);
var locationOfAirport = Address.Search(string.Empty, currentAirpot.City, currentAirpot.State.Abbreviation, string.Empty, false);
// Remove HTML comments and line breaks
responseString =
Regex.Replace(responseString, "<!--.*?-->", string.Empty, RegexOptions.Singleline).Replace("<br />", "");
IEnumerable<string> rows = responseString.Split(new[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
rows = rows.Skip(1); // Skip header row
var incidents = new List<WeatherIncident>();
foreach (string row in rows)
{
var entry = new WeatherUndergroundEntry(date, row);
WeatherIncidentType incidentType = WeatherIncidentClassifier.Classify(entry);
if (typeToFilter != null)
{
if (incidentType == typeToFilter)
{
incidents.Add(new WeatherIncident(locationOfAirport, incidentType,
date, moreInfoUrl));
}
}
else
{
if (incidentType != WeatherIncidentType.Unclassified)
{
incidents.Add(new WeatherIncident(locationOfAirport, incidentType,
date, moreInfoUrl));
}
}
}
return incidents;
}
/// <summary>
/// Classifies an entry of weather underground data as a weather event.
/// </summary>
/// <param name="entry"></param>
/// <returns>The corresponding Weather Incident Type</returns>
public static WeatherIncidentType Classify(WeatherUndergroundEntry entry)
{
// TODO: Document these rules
// TODO: Generalize these rules to be used with other web services
if (entry.Precipitation > 0.5)
{
if (entry.Temperature >= 32.0)
{
return WeatherIncidentType.Flood;
}
return WeatherIncidentType.WinterStorm;
}
if (entry.WindSpeed > 57) // approximately equal to 50 knots
{
return WeatherIncidentType.Wind;
}
if( entry.Conditions.Contains("hail") )
{
return WeatherIncidentType.Hail;
}
return WeatherIncidentType.Unclassified;
}