public void NormalizeYearChanges()
{
foreach (KeyValuePair <string, Dictionary <string, KeyValuePair <double[], double[]> > > kvp in bycountry)
{
CollectCountry.NormalizeYearChangesByCountry(kvp.Value);
}
}
public double EstimateHDI(string country, double year)
{
// find the year above and below
if (!bycountry.ContainsKey(country) || !bycountry[country].ContainsKey("HDI") ||
bycountry[country]["HDI"].Value.Length == 0)
{
return(double.NaN);
}
KeyValuePair <double, double>[] points = CollectCountry.GetBorderValues(year, bycountry[country]["HDI"]);
if (points.Length == 1 && points[0].Key == year)
{
return(points[0].Value);
}
if (!bycountry[country].ContainsKey("Total GDP- PPP") || !bycountry[country].ContainsKey("Total population"))
{
return(double.NaN);
}
double inYear = CollectCountry.GetYearValue(year, bycountry[country]["Total GDP- PPP"]) /
CollectCountry.GetYearValue(year, bycountry[country]["Total population"]);
if (points.Length == 1)
{
double inHdiYear = CollectCountry.GetYearValue(points[0].Key, bycountry[country]["Total GDP- PPP"]) /
CollectCountry.GetYearValue(points[0].Key, bycountry[country]["Total population"]);
return(Math.Min(1, points[0].Value * inYear / inHdiYear));
}
else
{
double inHdiLowerYear = CollectCountry.GetYearValue(points[0].Key, bycountry[country]["Total GDP- PPP"]) /
CollectCountry.GetYearValue(points[0].Key, bycountry[country]["Total population"]);
double lowerEstimate = Math.Min(1, points[0].Value * inYear / inHdiLowerYear);
double inHdiUpperYear = CollectCountry.GetYearValue(points[1].Key, bycountry[country]["Total GDP- PPP"]) /
CollectCountry.GetYearValue(points[1].Key, bycountry[country]["Total population"]);
double upperEstimate = Math.Min(1, points[0].Value * inYear / inHdiUpperYear);
if (double.IsNaN(lowerEstimate))
{
return(upperEstimate);
}
if (double.IsNaN(upperEstimate))
{
return(lowerEstimate);
}
return(((year - points[0].Key) * upperEstimate + (points[1].Key - year) * lowerEstimate) /
(points[1].Key - points[0].Key));
}
}
