private void KrigGage(KrigIndexSite gage)
{
Double[,] invertedCovarianceMatrix = null;
Double[,] ungagedCovarianceMatrix = null;
//kriging multiplies the transposed covariance matrix by the matrix of covariances between the ungaged catchment and the gages
//to obtain a set of weights. The weights are multiplied by each of the respective r values to obtain the unbiased minimum variance
//estimate of the correlation between the given study streamgage and the ungaged catchament.
//Archfield S.A. and Vogel R.M 2010 Map correlation method: Selection of a reference streamgage
// to estimate daily streamflow at ungaged catchments, Water Resources Research Vol. 46
//Isaaks, E. H., and R. M. Srivastava (1989), An Introduction to Applied
// Geostatistics, 1st ed., Oxford Univ. Press, New York. pg287-296
try
{
//remove SitesNotIncluded
invertedCovarianceMatrix = MathOps.InvertMatrixGJ(BuildCovarianceMatrix(ResizeDistanceMatrix(gage.Correlations.Keys), gage.rangeParameterA, gage.partialSillSigma));
ungagedCovarianceMatrix = BuildCovarianceMatrix(ResizeSiteMatrix(gage.Correlations.Keys), gage.rangeParameterA, gage.partialSillSigma);
Double val = GetKrigedGageCorrelations(invertedCovarianceMatrix, ungagedCovarianceMatrix, gage.Correlations.Select(v => v.Value).ToList());
AddCorrelationGage(new GageCorrelationStruc(val, gage));
}
catch (Exception e)
{
throw;
}
}//end KrigGage
}//end GetCorrelatedGages
private Boolean LoadIndexProperties(IEnumerable <List <String> > file, IEnumerable <List <String> > correlationFile)
{
KrigIndexSite gage = null;
try
{
IndexGages = new List <KrigIndexSite>();
foreach (var item in file.Skip(1).ToList())
{
gage = new KrigIndexSite(item[0], item[1], Convert.ToDouble(item[7]),
Convert.ToDouble(item[6]), this.SR, Convert.ToDouble(item[8]),
Convert.ToDouble(item[2]), Convert.ToDouble(item[3]),
GetCorrelatedGages(item[0], correlationFile));
IndexGages.Add(gage);
}//next line
return(true);
}
catch (Exception e)
{
throw new Exception(e.Message);
} //end try
} //end LoadIndexProperties
}//end AddCorrelationGage
private Boolean CorrelatedGagesExists(string siteID)
{
KrigIndexSite gage = TopCorrelatedGages.FirstOrDefault(g => g.Value.ID == siteID).Value;
if (gage == null) return false;
return true;
}//end CorrelatedGagesExists
public GageCorrelationStruc(double c, KrigIndexSite g)
{
gage = g;
Correlation = c;
}
