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author | Jitse Niesen <jitse@maths.leeds.ac.uk> | 2010-11-16 17:28:59 +0000 |
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committer | Jitse Niesen <jitse@maths.leeds.ac.uk> | 2010-11-16 17:28:59 +0000 |
commit | e54c8d20cbbfa43f037d6a521eca16e45a61a6b2 (patch) | |
tree | e7d02c739f4dba6558c2e7e8c1e6845955314a1c /doc/snippets | |
parent | da05b6af0ef8720355eb7ae0321476ca9a3d81d8 (diff) |
Docs: aliasing and component-wise operations.
Diffstat (limited to 'doc/snippets')
-rw-r--r-- | doc/snippets/TopicAliasing_cwise.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/snippets/TopicAliasing_cwise.cpp b/doc/snippets/TopicAliasing_cwise.cpp new file mode 100644 index 000000000..7049f6c56 --- /dev/null +++ b/doc/snippets/TopicAliasing_cwise.cpp @@ -0,0 +1,20 @@ +MatrixXf mat(2,2); +mat << 1, 2, 4, 7; +cout << "Here is the matrix mat:\n" << mat << endl << endl; + +mat = 2 * mat; +cout << "After 'mat = 2 * mat', mat = \n" << mat << endl << endl; + + +mat = mat - MatrixXf::Identity(2,2); +cout << "After the subtraction, it becomes\n" << mat << endl << endl; + + +ArrayXXf arr = mat; +arr = arr.square(); +cout << "After squaring, it becomes\n" << arr << endl << endl; + +// Combining all operations in one statement: +mat << 1, 2, 4, 7; +mat = (2 * mat - MatrixXf::Identity(2,2)).array().square(); +cout << "Doing everything at once yields\n" << mat << endl << endl; |