Impala Documentation

Matrix::Mat* Impala::Core::Vector::Apply	(	double(*)(const VectorTem< double > &, const VectorTem< double > &)	fn,
		const VectorSet< Array::Array2dScalarReal64 > *	horizontal,
		const VectorSet< Array::Array2dScalarReal64 > *	vertical
	)

apply a function to two vector sets, resulting in a matrix

Todo:: apply to pattern coding style, introduce function object i.s.o. function pointer

Definition at line 21 of file Apply.h.

References Impala::Core::Array::Array2dTem< StorT, elemSize, ArithT >::CPB(), Impala::Core::Vector::VectorSet< ArrayT >::GetVector(), ILOG_DEBUG, ILOG_VAR, and Impala::Core::Vector::VectorSet< ArrayT >::Size().

Referenced by Impala::Application::ComputeMatrix(), Impala::Core::Training::ApplyConceptsHelperKernels::LoadFeatures(), and Impala::Core::Training::PrecomputeKernelMatrix().

00024 {
00025     ILOG_VAR(Core.Vector.Apply);
00026 
00027     int size1 = horizontal->Size(), size2 = vertical->Size();
00028     ILOG_DEBUG("s1 = " << size1 << ", s2 = " << size2);
00029     Matrix::Mat* m = new Matrix::Mat(size1, size2, 0, 0);
00030 
00031     double *ptr = m->CPB();
00032     for(int row=0 ; row<size2 ; ++row)
00033     {
00034         for(int col=0 ; col<size1 ; ++col)
00035         {
00036             VectorTem<double> v1(horizontal->GetVector(col, true));
00037             VectorTem<double> v2(vertical->GetVector(row, true));
00038             *ptr = (*fn)(v1, v2);
00039             ++ptr;
00040         }
00041     }
00042 
00043     return m;
00044 }

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