/// <summary>
/// Calculates the abundance index over a selected period of time for a specific taxon.
/// </summary>
/// <param name="periodicityId">The time period id.</param>
/// <param name="taxonId">The taxon id.</param>
/// <param name="allSelectedSpeciesTimeSeriesData">Calculated time series data for all selected taxa.</param>
/// <returns>A list of values representing the abundance index.</returns>
public List <AbundanceIndexData> CalculateAbundanceIndex(int periodicityId, int taxonId, TimeStepSpeciesObservationCountList allSelectedSpeciesTimeSeriesData)
{
List <AbundanceIndexData> abundanceIndexList = new List <AbundanceIndexData>();
TimeStepSpeciesObservationCountList singleSpeciesTimeSeriesData = GetSpeciesObservationCountFromWebService(UserContext, periodicityId, taxonId);
//TimeStepSpeciesObservationCountList allSelectedSpeciesTimeSeriesData = GetSpeciesObservationCountFromWebService(UserContext, periodicityId, MySettings.Filter.Taxa.TaxonIds.ToList());
long singleSpeciesTotalSum = singleSpeciesTimeSeriesData.Sum(t => t.ObservationCount);
long allSelectedSpeciesTotalSum = allSelectedSpeciesTimeSeriesData.Sum(t => t.ObservationCount);
double divisor = (double)singleSpeciesTotalSum / (allSelectedSpeciesTotalSum - singleSpeciesTotalSum);
foreach (ITimeStepSpeciesObservationCount timeStepSpeciesObservationCount in allSelectedSpeciesTimeSeriesData)
{
double singleSpeciesPeriodObservationCount = 0.0;
// Find the current timeStep value.
foreach (TimeStepSpeciesObservationCount timeStep in singleSpeciesTimeSeriesData)
{
if (timeStep.Name == timeStepSpeciesObservationCount.Name)
{
singleSpeciesPeriodObservationCount = timeStep.ObservationCount;
break;
}
}
double dividend = singleSpeciesPeriodObservationCount / (timeStepSpeciesObservationCount.ObservationCount - singleSpeciesPeriodObservationCount);
double logArgument = dividend / divisor;
double value = Math.Log10(logArgument);
AbundanceIndexData abundanceIndexData = new AbundanceIndexData();
abundanceIndexData.TaxonId = taxonId;
abundanceIndexData.TimeStep = timeStepSpeciesObservationCount.Name;
if (!double.IsNaN(value) && !double.IsInfinity(value))
{
abundanceIndexData.AbundanceIndex = value;
}
abundanceIndexData.Count = (int)singleSpeciesPeriodObservationCount;
abundanceIndexData.TotalCount = (int)timeStepSpeciesObservationCount.ObservationCount;
abundanceIndexList.Add(abundanceIndexData);
}
return(abundanceIndexList);
}
/// <summary>
/// Calculates the abundance index over a selected period of time for a specific taxon.
/// </summary>
/// <param name="periodicityId">The time period id.</param>
/// <param name="taxonId">The taxon id.</param>
/// <returns>A list of values representing the abundance index.</returns>
public List <KeyValuePair <string, string> > GetAbundanceIndexDiagramResult(int periodicityId, int taxonId)
{
Dictionary <string, string> observationCountData = new Dictionary <string, string>();
// Todo Update when temporal filter is connected to diagram result sprint 13
if (true) // MySettings.Filter.Temporal.IsActive)
{
TimeStepSpeciesObservationCountList sumSpeciesPeriod = GetSpeciesObservationCountFromWebService(UserContext, periodicityId, taxonId);
TimeStepSpeciesObservationCountList sumPeriod = GetSpeciesObservationCountFromWebService(UserContext, periodicityId, MySettings.Filter.Taxa.TaxonIds.ToList());
long sumSpeciesTotal = sumSpeciesPeriod.Sum(t => t.ObservationCount);
long sumTotal = sumPeriod.Sum(t => t.ObservationCount);
double divisor = (double)sumSpeciesTotal / (sumTotal - sumSpeciesTotal);
for (int i = 0; i < sumPeriod.Count; ++i)
{
double sumSpeciesPeriodObservationCount = 0.0;
foreach (TimeStepSpeciesObservationCount timeStep in sumSpeciesPeriod)
{
if (timeStep.Name == sumPeriod[i].Name)
{
sumSpeciesPeriodObservationCount = timeStep.ObservationCount;
break;
}
}
double dividend = sumSpeciesPeriodObservationCount / (sumPeriod[i].ObservationCount - sumSpeciesPeriodObservationCount);
double logArgument = dividend / divisor;
double value = Math.Log10(logArgument);
observationCountData.Add(sumPeriod[i].Name, !double.IsNaN(value) && !double.IsInfinity(value) ? Convert.ToString(value) : string.Empty);
}
}
List <KeyValuePair <string, string> > result = observationCountData.ToList();
return(result);
}