private void SetupInterpolatedPredictions(
IPollsProvider polls,
ElectionResult previousElectionResult)
{
InterpolatedPredictions.Clear();
if (!polls.PollsByDate.Any())
{
return;
}
// Make up a set of dummy polls from the interpolated values
DateTime startDate = polls.PollsByDate.First().PublicationDate;
DateTime lastDate = polls.PollsByDate.Last().PublicationDate;
int numberOfInterpolatedValues = (lastDate - startDate).Days + 1;
List <PartyPollingResultsSet> constituencyPredictors =
PartyPollingSets.Where(x => x.IsConstituency).ToList();
List <PartyPollingResultsSet> listPredictors =
PartyPollingSets.Where(x => !x.IsConstituency).ToList();
for (int i = 0; i < numberOfInterpolatedValues; i++)
{
OpinionPoll interpolationPoll =
GetInterpolationPoll(polls, startDate, i, constituencyPredictors, listPredictors);
ElectionPrediction electionPrediction =
new ElectionPrediction(previousElectionResult, interpolationPoll);
InterpolatedPredictions.Add(new PollingPrediction(electionPrediction, interpolationPoll));
}
}
private void InitialisePartyPollingSets(IPollsProvider polls)
{
PartyPollingSets = new List <PartyPollingResultsSet>();
foreach (string party in PartyPrediction.PartiesList)
{
PartyPollingSets.Add(
new PartyPollingResultsSet(party, true, polls.PollsByDate));
PartyPollingSets.Add(
new PartyPollingResultsSet(party, false, polls.PollsByDate));
}
}
public void UpdatePredictions(
IPollsProvider polls,
ElectionResult previousElectionResult)
{
Predictions.Clear();
foreach (OpinionPoll poll in polls.PollsByDate)
{
ElectionPrediction electionPrediction =
new ElectionPrediction(previousElectionResult, poll);
Predictions.Add(electionPrediction);
PollingPredictions.Add(new PollingPrediction(electionPrediction, poll));
}
InitialisePartyPollingSets(polls);
SetupInterpolatedPredictions(polls, previousElectionResult);
OnPollsUpdated(null);
}
private static OpinionPoll GetInterpolationPoll(
IPollsProvider polls,
DateTime startDate,
int daysSinceStart,
List <PartyPollingResultsSet> constituencyPredictors,
List <PartyPollingResultsSet> listPredictors)
{
DateTime interpolatedDate = startDate.AddDays(daysSinceStart);
// Get the interpolated percentages
List <PartyResult> constituencyPredictions =
constituencyPredictors.Select(
constituencyPredictor => new PartyResult
{
PartyAbbreviation = constituencyPredictor.PartyAbbreviation,
PercentageOfVotes = constituencyPredictor.GetInterploatedValue(interpolatedDate)
}).ToList();
List <PartyResult> listPredictions =
listPredictors.Select(
listPredictor => new PartyResult
{
PartyAbbreviation = listPredictor.PartyAbbreviation,
PercentageOfVotes = listPredictor.GetInterploatedValue(interpolatedDate)
}).ToList();
// Make up the poll
OpinionPoll interpolationPoll = new OpinionPoll
{
Link = polls.PollsByDate.First().Link,
PollingCompany = "@Interpolation",
PublicationDate = interpolatedDate,
ConstituencyPredictions = constituencyPredictions,
ListPredictions = listPredictions
};
return(interpolationPoll);
}
