Added an automatically generated list of selected examples in the documentation.

Added the custom gemetry_module tag, and use it.

Eigen/src/Array/Random.h

@@ -44,6 +44,8 @@ struct ei_functor_traits<ei_scalar_random_op<Scalar> >
   * it is redundant to pass \a rows and \a cols as arguments, so ei_random() should be used
   * instead.
   *
+  * \addexample RandomExample \label How to create a matrix with random coefficients
+  *
   * Example: \include MatrixBase_random_int_int.cpp
   * Output: \verbinclude MatrixBase_random_int_int.out
   *

Eigen/src/Core/Block.h

@@ -341,6 +341,8 @@ template<typename MatrixType, int BlockRows, int BlockCols> class Block<MatrixTy
   * \param blockRows the number of rows in the block
   * \param blockCols the number of columns in the block
   *
+  * \addexample BlockIntIntIntInt \label How to reference a sub-matrix (dynamic-size)
+  *
   * Example: \include MatrixBase_block_int_int_int_int.cpp
   * Output: \verbinclude MatrixBase_block_int_int_int_int.out
   *
@@ -369,6 +371,8 @@ inline const Block<Derived> MatrixBase<Derived>
   *
   * \only_for_vectors
   *
+  * \addexample BlockIntInt \label How to reference a sub-vector (dynamic size)
+  *
   * \param start the first coefficient in the block
   * \param size the number of coefficients in the block
   *
@@ -410,6 +414,8 @@ inline const Block<Derived> MatrixBase<Derived>
   *
   * \param size the number of coefficients in the block
   *
+  * \addexample BlockInt \label How to reference a sub-vector (fixed-size)
+  *
   * Example: \include MatrixBase_start_int.cpp
   * Output: \verbinclude MatrixBase_start_int.out
   *
@@ -452,6 +458,8 @@ MatrixBase<Derived>::start(int size) const
   *
   * \param size the number of coefficients in the block
   *
+  * \addexample BlockEnd \label How to reference the end of a vector (fixed-size)
+  *
   * Example: \include MatrixBase_end_int.cpp
   * Output: \verbinclude MatrixBase_end_int.out
   *
@@ -498,6 +506,8 @@ MatrixBase<Derived>::end(int size) const
   *
   * The template parameter \a Size is the number of coefficients in the block
   *
+  * \addexample BlockStart \label How to reference the start of a vector (fixed-size)
+  *
   * Example: \include MatrixBase_template_int_start.cpp
   * Output: \verbinclude MatrixBase_template_int_start.out
   *
@@ -569,6 +579,8 @@ MatrixBase<Derived>::end() const
   * \param cRows the number of rows in the corner
   * \param cCols the number of columns in the corner
   *
+  * \addexample BlockCornerDynamicSize \label How to reference a sub-corner of a matrix
+  *
   * Example: \include MatrixBase_corner_enum_int_int.cpp
   * Output: \verbinclude MatrixBase_corner_enum_int_int.out
   *
@@ -678,6 +690,8 @@ inline const Block<Derived, CRows, CCols> MatrixBase<Derived>
   * \param startRow the first row in the block
   * \param startCol the first column in the block
   *
+  * \addexample BlockSubMatrixFixedSize \label How to reference a sub-matrix (fixed-size)
+  *
   * Example: \include MatrixBase_block_int_int.cpp
   * Output: \verbinclude MatrixBase_block_int_int.out
   *
@@ -704,6 +718,8 @@ inline const Block<Derived, BlockRows, BlockCols> MatrixBase<Derived>
 }
 
 /** \returns an expression of the \a i-th column of *this. Note that the numbering starts at 0.
+  *
+  * \addexample BlockColumn \label How to reference a single column of a matrix
   *
   * Example: \include MatrixBase_col.cpp
   * Output: \verbinclude MatrixBase_col.out
@@ -725,6 +741,8 @@ MatrixBase<Derived>::col(int i) const
 }
 
 /** \returns an expression of the \a i-th row of *this. Note that the numbering starts at 0.
+  *
+  * \addexample BlockRow \label How to reference a single row of a matrix
   *
   * Example: \include MatrixBase_row.cpp
   * Output: \verbinclude MatrixBase_row.out

Eigen/src/Core/CommaInitializer.h

@@ -113,6 +113,8 @@ struct MatrixBase<Derived>::CommaInitializer
   * The coefficients must be provided in a row major order and exactly match
   * the size of the matrix. Otherwise an assertion is raised.
   *
+  * \addexample CommaInit \label How to easily set all the coefficients of a matrix
+  *
   * Example: \include MatrixBase_set.cpp
   * Output: \verbinclude MatrixBase_set.out
   */

Eigen/src/Core/CwiseBinaryOp.h

@@ -228,6 +228,8 @@ Cwise<ExpressionType>::max(const MatrixBase<OtherDerived> &other) const
   * The template parameter \a CustomBinaryOp is the type of the functor
   * of the custom operator (see class CwiseBinaryOp for an example)
   *
+  * \addexample CustomCwiseBinaryFunctors \label How to use custom coeff wise binary functors
+  *
   * Here is an example illustrating the use of custom functors:
   * \include class_CwiseBinaryOp.cpp
   * Output: \verbinclude class_CwiseBinaryOp.out

Eigen/src/Core/CwiseNullaryOp.h

@@ -261,6 +261,8 @@ Derived& MatrixBase<Derived>::setConstant(const Scalar& value)
   * it is redundant to pass \a rows and \a cols as arguments, so zero() should be used
   * instead.
   *
+  * \addexample Zero \label How to take get a zero matrix
+  *
   * Example: \include MatrixBase_zero_int_int.cpp
   * Output: \verbinclude MatrixBase_zero_int_int.out
   *
@@ -356,6 +358,8 @@ Derived& MatrixBase<Derived>::setZero()
   * it is redundant to pass \a rows and \a cols as arguments, so ones() should be used
   * instead.
   *
+  * \addexample One \label How to get a matrix with all coefficients equal one
+  *
   * Example: \include MatrixBase_ones_int_int.cpp
   * Output: \verbinclude MatrixBase_ones_int_int.out
   *
@@ -446,6 +450,8 @@ Derived& MatrixBase<Derived>::setOnes()
   * This variant is meant to be used for dynamic-size matrix types. For fixed-size types,
   * it is redundant to pass \a rows and \a cols as arguments, so identity() should be used
   * instead.
+  * 
+  * \addexample Identity \label How to get an identity matrix
   *
   * Example: \include MatrixBase_identity_int_int.cpp
   * Output: \verbinclude MatrixBase_identity_int_int.out

Eigen/src/Core/CwiseUnaryOp.h

@@ -109,6 +109,8 @@ class CwiseUnaryOp : ei_no_assignment_operator,
   * The template parameter \a CustomUnaryOp is the type of the functor
   * of the custom unary operator.
   *
+  * \addexample CustomCwiseUnaryFunctors \label How to use custom coeff wise unary functors
+  *
   * Here is an example:
   * \include class_CwiseUnaryOp.cpp
   * Output: \verbinclude class_CwiseUnaryOp.out

Eigen/src/Core/DiagonalMatrix.h

@@ -84,6 +84,8 @@ class DiagonalMatrix : ei_no_assignment_operator,
   *
   * \only_for_vectors
   *
+  * \addexample AsDiagonalExample \label How to build a diagonal matrix from a vector
+  *
   * Example: \include MatrixBase_asDiagonal.cpp
   * Output: \verbinclude MatrixBase_asDiagonal.out
   *

Eigen/src/Core/Extract.h

@@ -94,6 +94,8 @@ template<typename MatrixType, unsigned int Mode> class Extract
   * The parameter \a Mode can have the following values: \c Upper, \c StrictlyUpper, \c UnitUpper,
   * \c Lower, \c StrictlyLower, \c UnitLower.
   *
+  * \addexample ExtractExample \label How to extract a triangular part of an arbitrary matrix
+  *
   * Example: \include MatrixBase_extract.cpp
   * Output: \verbinclude MatrixBase_extract.out
   *

Eigen/src/Core/Flagged.h

@@ -120,6 +120,8 @@ template<typename ExpressionType, unsigned int Added, unsigned int Removed> clas
 };
 
 /** \returns an expression of *this with added flags
+  *
+  * \addexample MarkExample \label How to mark a triangular matrix as triangular
   *
   * Example: \include MatrixBase_marked.cpp
   * Output: \verbinclude MatrixBase_marked.out

Eigen/src/Geometry/AngleAxis.h

@@ -25,9 +25,11 @@
 #ifndef EIGEN_ANGLEAXIS_H
 #define EIGEN_ANGLEAXIS_H
 
-/** \class AngleAxis
+/** \geometry_module \ingroup Geometry
   *
-  * \brief Represents a rotation in a 3 dimensional space as a rotation angle around a 3D axis
+  * \class AngleAxis
+  *
+  * \brief Represents a 3D rotation as a rotation angle around an arbitray 3D axis
   *
   * \param _Scalar the scalar type, i.e., the type of the coefficients.
   *
@@ -35,7 +37,7 @@
   * \li \c AngleAxisf for \c float
   * \li \c AngleAxisd for \c double
   *
-  * \sa class Quaternion, class EulerAngles, class Transform
+  * \sa class Quaternion, class Transform
   */
 template<typename _Scalar>
 class AngleAxis

Eigen/src/Geometry/Cross.h

@@ -25,7 +25,8 @@
 #ifndef EIGEN_CROSS_H
 #define EIGEN_CROSS_H
 
-/** \returns the cross product of \c *this and \a other */
+/** \geometry_module
+  * \returns the cross product of \c *this and \a other */
 template<typename Derived>
 template<typename OtherDerived>
 inline typename ei_eval<Derived>::type

Eigen/src/Geometry/Quaternion.h

@@ -30,7 +30,9 @@ template<typename Other,
          int OtherCols=Other::ColsAtCompileTime>
 struct ei_quaternion_assign_impl;
 
-/** \class Quaternion
+/** \geometry_module \ingroup Geometry
+  *
+  * \class Quaternion
   *
   * \brief The quaternion class used to represent 3D orientations and rotations
   *
@@ -48,7 +50,7 @@ struct ei_quaternion_assign_impl;
   * \li \c Quaternionf for \c float
   * \li \c Quaterniond for \c double
   *
-  * \sa  class AngleAxis, class EulerAngles, class Transform
+  * \sa  class AngleAxis, class Transform
   */
 template<typename _Scalar>
 class Quaternion

Eigen/src/Geometry/Rotation.h

@@ -28,7 +28,9 @@
 // this file aims to contains the various representations of rotation/orientation
 // in 2D and 3D space excepted Matrix and Quaternion.
 
-/** \class ToRotationMatrix
+/** \geometry_module
+  *
+  * \class ToRotationMatrix
   *
   * \brief Template static struct to convert any rotation representation to a matrix form
   *
@@ -101,7 +103,9 @@ struct ToRotationMatrix<Scalar, Dim, MatrixBase<OtherDerived> >
   }
 };
 
-/** \class Rotation2D
+/** \geometry_module
+  *
+  * \class Rotation2D
   *
   * \brief Represents a rotation/orientation in a 2 dimensional space.
   *

Eigen/src/Geometry/Transform.h

@@ -35,7 +35,9 @@ template< typename Other,
           int OtherCols=Other::ColsAtCompileTime>
 struct ei_transform_product_impl;
 
-/** \class Transform
+/** \geometry_module \ingroup Geometry
+  *
+  * \class Transform
   *
   * \brief Represents an homogeneous transformation in a N dimensional space
   *