diff options
Diffstat (limited to 'eigen/doc/snippets/Tutorial_AdvancedInitialization_ThreeWays.cpp')
| -rw-r--r-- | eigen/doc/snippets/Tutorial_AdvancedInitialization_ThreeWays.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/eigen/doc/snippets/Tutorial_AdvancedInitialization_ThreeWays.cpp b/eigen/doc/snippets/Tutorial_AdvancedInitialization_ThreeWays.cpp new file mode 100644 index 0000000..cb74576 --- /dev/null +++ b/eigen/doc/snippets/Tutorial_AdvancedInitialization_ThreeWays.cpp @@ -0,0 +1,20 @@ +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; + |