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| author | Stanislaw Halik <sthalik@misaki.pl> | 2016-09-18 12:42:15 +0200 |
|---|---|---|
| committer | Stanislaw Halik <sthalik@misaki.pl> | 2016-11-02 15:12:04 +0100 |
| commit | 44861dcbfeee041223c4aac1ee075e92fa4daa01 (patch) | |
| tree | 6dfdfd9637846a7aedd71ace97d7d2ad366496d7 /eigen/doc/snippets/TopicAliasing_cwise.cpp | |
| parent | f3fe458b9e0a29a99a39d47d9a76dc18964b6fec (diff) | |
update
Diffstat (limited to 'eigen/doc/snippets/TopicAliasing_cwise.cpp')
| -rw-r--r-- | eigen/doc/snippets/TopicAliasing_cwise.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/eigen/doc/snippets/TopicAliasing_cwise.cpp b/eigen/doc/snippets/TopicAliasing_cwise.cpp new file mode 100644 index 0000000..7049f6c --- /dev/null +++ b/eigen/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; |