Synch the fork

Author: dbrundu

Doxyfile

@@ -1,5 +1,5 @@
 #PROJECT_NAME          = "Hydra_examples_and_documentation"
-PROJECT_NUMBER         =  2.4.0
+PROJECT_NUMBER         =  2.5.0
 
 STRIP_FROM_PATH        = /home/augalves/Development/Release/Hydra
 

hydra/FCN.h

@@ -395,6 +395,7 @@ class FCN<Estimator<PDF,Iterator>>: public ROOT::Minuit2::FCNBase
 
 	FCN(FCN<Estimator<PDF,Iterator>> const& other):
 	ROOT::Minuit2::FCNBase(other),
+	fDataSize(other.GetDataSize()),
 	fPDF(other.GetPDF()),
 	fBegin(other.GetBegin()),
 	fEnd(other.GetEnd()),
@@ -412,6 +413,7 @@ class FCN<Estimator<PDF,Iterator>>: public ROOT::Minuit2::FCNBase
 		if( this==&other ) return this;
 
 		ROOT::Minuit2::FCNBase::operator=(other);
+		fDataSize = other.GetDataSize();
 		fPDF   = other.GetPDF();
 		fBegin = other.GetBegin();
 		fEnd   = other.GetEnd();

hydra/SPlot.h

@@ -107,18 +107,19 @@ class SPlot: public detail::AddPdfBase<PDF1,PDF2,PDFs...>
 	SPlot( PDFSumExtendable<PDF1, PDF2, PDFs...> const& pdf, Iterator first, Iterator last):
 		fPDFs( pdf.GetPDFs() ),
 		fFunctors( pdf.GetFunctors()),
+		fCovMatrix( Eigen::Matrix<double, npdfs, npdfs>{} ),
 	    fBegin( iterator( first, transformer(  pdf.GetFunctors(), Eigen::Matrix<double, npdfs, npdfs>{} ))),
 		fEnd (iterator( last , transformer(  pdf.GetFunctors(), Eigen::Matrix<double, npdfs, npdfs>{} )))
 
 	{
 		for(size_t i=0;i<npdfs; i++)
 			fCoeficients[i] = pdf.GetCoeficient(i);
 
-		fCovMatrix << 0.0, 0.0, 0.0, 0.0;
+		//fCovMatrix << 0.0, 0.0, 0.0, 0.0;
 
 
-		Eigen::Matrix<double, npdfs, npdfs>  init;
-		init << 0.0, 0.0, 0.0, 0.0;
+		Eigen::Matrix<double, npdfs, npdfs>  init{};
+		//init << 0.0, 0.0, 0.0, 0.0;
 
 		fCovMatrix = hydra_thrust::transform_reduce(system_type(), first, last,
 				detail::CovMatrixUnary<