C++ (Cpp) CSparseMatrix::compressFromTriplet Examples

Example #1

File: CSparseMatrix_unittest.cpp Project: gamman/MRPT

void generateRandomSparseMatrix(size_t N, size_t M, size_t nEntries,  CSparseMatrix &MAT)
{
	MAT.clear();

	MAT.setRowCount(N);
	MAT.setColCount(M);

	for (size_t i=0;i<nEntries;i++)
	{
		MAT.insert_entry( 
			mrpt::random::randomGenerator.drawUniform32bit() % N,
			mrpt::random::randomGenerator.drawUniform32bit() % M,
			mrpt::random::randomGenerator.drawGaussian1D(0,1) );
	}

	// Return already compressed:
	MAT.compressFromTriplet();
}

Example #2

File: CSparseMatrix_unittest.cpp Project: gamman/MRPT

TEST(SparseMatrix, InitFromTriplet)
{
	CSparseMatrix SM;
	CMatrixDouble  D(10,20);

	SM.insert_entry(2,2, 4.0);  D(2,2) = 4.0;
	SM.insert_entry(6,8, -2.0);  D(6,8) = -2.0;

	SM.setRowCount(10);
	SM.setColCount(20);

	CMatrixDouble    dense_out1;
	SM.get_dense(dense_out1);

	SM.compressFromTriplet();

	CMatrixDouble    dense_out2;
	SM.get_dense(dense_out2);

	EXPECT_TRUE(dense_out1==dense_out2);
}