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bug #638: fix typos in sparse tutorial

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(transplanted from 956251b738
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Gael Guennebaud 2013-08-12 13:37:47 +02:00
parent fa81676d64
commit 76d05e8236
3 changed files with 6 additions and 6 deletions
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2
doc/TutorialSparse.dox
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@ -83,7 +83,7 @@ There is no notion of compressed/uncompressed mode for a SparseVector.
\section TutorialSparseExample First example
Before describing each individual class, let's start with the following typical example: solving the Lapace equation \f$ \nabla u = 0 \f$ on a regular 2D grid using a finite difference scheme and Dirichlet boundary conditions.
Before describing each individual class, let's start with the following typical example: solving the Laplace equation \f$ \nabla u = 0 \f$ on a regular 2D grid using a finite difference scheme and Dirichlet boundary conditions.
Such problem can be mathematically expressed as a linear problem of the form \f$ Ax=b \f$ where \f$ x \f$ is the vector of \c m unknowns (in our case, the values of the pixels), \f$ b \f$ is the right hand side vector resulting from the boundary conditions, and \f$ A \f$ is an \f$ m \times m \f$ matrix containing only a few non-zero elements resulting from the discretization of the Laplacian operator.
<table class="manual">

6
doc/special_examples/CMakeLists.txt
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@ -10,12 +10,12 @@ endif(NOT EIGEN_TEST_NOQT)
if(QT4_FOUND)
add_executable(Tutorial_sparse_example Tutorial_sparse_example.cpp Tutorial_sparse_example_details.cpp)
target_link_libraries(Tutorial_sparse_example ${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO} ${QT_QTCORE_LIBRARY} ${QT_QTGUI_LIBRARY})
add_custom_command(
TARGET Tutorial_sparse_example
POST_BUILD
COMMAND Tutorial_sparse_example
ARGS ${CMAKE_CURRENT_BINARY_DIR}/../html/Tutorial_sparse_example.jpeg
COMMAND Tutorial_sparse_example ARGS ${CMAKE_CURRENT_BINARY_DIR}/../html/Tutorial_sparse_example.jpeg
)
add_dependencies(all_examples Tutorial_sparse_example)
endif(QT4_FOUND)

4
doc/special_examples/Tutorial_sparse_example_details.cpp
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@ -11,8 +11,8 @@ void insertCoefficient(int id, int i, int j, double w, std::vector<T>& coeffs,
int n = boundary.size();
int id1 = i+j*n;
if(i==-1 || i==n) b(id) -= w * boundary(j); // constrained coeffcieint
else if(j==-1 || j==n) b(id) -= w * boundary(i); // constrained coeffcieint
if(i==-1 || i==n) b(id) -= w * boundary(j); // constrained coefficient
else if(j==-1 || j==n) b(id) -= w * boundary(i); // constrained coefficient
else coeffs.push_back(T(id,id1,w)); // unknown coefficient
}