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Extend tutorial page 5: Advanced initialization.

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This commit is contained in:
Jitse Niesen
2010-07-22 15:53:21 +01:00
parent 96ba7cd655
commit 403e672587
7 changed files with 174 additions and 13 deletions
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20
doc/snippets/Tutorial_AdvancedInitialization_ThreeWays.cpp Normal file
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const int size = 6;
MatrixXd mat1(size, size);
mat1.topLeftCorner(size/2, size/2) = MatrixXd::Zero(size/2, size/2);
mat1.topRightCorner(size/2, size/2) = MatrixXd::Identity(size/2, size/2);
mat1.bottomLeftCorner(size/2, size/2) = MatrixXd::Identity(size/2, size/2);
mat1.bottomRightCorner(size/2, size/2) = MatrixXd::Zero(size/2, size/2);
std::cout << mat1 << std::endl << std::endl;
MatrixXd mat2(size, size);
mat2.topLeftCorner(size/2, size/2).setZero();
mat2.topRightCorner(size/2, size/2).setIdentity();
mat2.bottomLeftCorner(size/2, size/2).setIdentity();
mat2.bottomRightCorner(size/2, size/2).setZero();
std::cout << mat2 << std::endl << std::endl;
MatrixXd mat3(size, size);
mat3 << MatrixXd::Zero(size/2, size/2), MatrixXd::Identity(size/2, size/2),
MatrixXd::Identity(size/2, size/2), MatrixXd::Zero(size/2, size/2);
std::cout << mat3 << std::endl;