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30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
namespace Eigen {
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/** \page TutorialAdvancedInitialization Tutorial - Advanced initialization
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\ingroup Tutorial
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\section TutorialMatrixArithmCommaInitializer Comma initializer
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Eigen offers a comma initializer syntax which allows to set all the coefficients
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of any dense objects (matrix, vector, array, block, etc.) to specific values:
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\include Tutorial_commainit_01.cpp
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Output: \verbinclude Tutorial_commainit_01.out
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Moreover, the elements of the initialization list may themselves be Eigen expressions:
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\include Tutorial_commainit_02.cpp
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Output: \verbinclude Tutorial_commainit_02.out
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<span class="note">\b Side \b note: here \link CommaInitializer::finished() .finished() \endlink
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is used to get the actual matrix object once the comma initialization
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of our temporary submatrix is done. Note that despite the apparent complexity of such an expression,
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Eigen's comma initializer usually compiles to very optimized code without any overhead.</span>
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TODO mention using the comma initializer to fill a block xpr like m.row(i) << 1,2,3;
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TODO add more sections about Identity(), Zero(), Constant(), Random(), LinSpaced().
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*/
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}
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