xref: /aosp_15_r20/external/eigen/doc/snippets/Tutorial_SlicingCol.cpp (revision bf2c37156dfe67e5dfebd6d394bad8b2ab5804d4)
1*bf2c3715SXin Li MatrixXf M1 = MatrixXf::Random(3,8);
2*bf2c3715SXin Li cout << "Column major input:" << endl << M1 << "\n";
3*bf2c3715SXin Li Map<MatrixXf,0,OuterStride<> > M2(M1.data(), M1.rows(), (M1.cols()+2)/3, OuterStride<>(M1.outerStride()*3));
4*bf2c3715SXin Li cout << "1 column over 3:" << endl << M2 << "\n";
5*bf2c3715SXin Li 
6*bf2c3715SXin Li typedef Matrix<float,Dynamic,Dynamic,RowMajor> RowMajorMatrixXf;
7*bf2c3715SXin Li RowMajorMatrixXf M3(M1);
8*bf2c3715SXin Li cout << "Row major input:" << endl << M3 << "\n";
9*bf2c3715SXin Li Map<RowMajorMatrixXf,0,Stride<Dynamic,3> > M4(M3.data(), M3.rows(), (M3.cols()+2)/3,
10*bf2c3715SXin Li                                               Stride<Dynamic,3>(M3.outerStride(),3));
11*bf2c3715SXin Li cout << "1 column over 3:" << endl << M4 << "\n";
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