add a Transposition section in page 2

doc/snippets/CMakeLists.txt

@@ -26,3 +26,5 @@ foreach(snippet_src ${snippets_SRCS})
   set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${compile_snippet_src}
                               PROPERTIES OBJECT_DEPENDS ${snippet_src})
 endforeach(snippet_src)
+
+ei_add_target_property(compile_tut_arithmetic_transpose_aliasing COMPILE_FLAGS -DEIGEN_NO_DEBUG)

doc/snippets/tut_arithmetic_transpose_aliasing.cpp

@@ -0,0 +1,4 @@
+Matrix2i a; a << 1, 2, 3, 4;
+cout << "Here is the matrix a:\n" << a << endl;
+a = a.transpose(); // fails
+cout << "and the aliasing effect:\n" << a << endl;

doc/snippets/tut_arithmetic_transpose_conjugate.cpp

@@ -0,0 +1,12 @@
+MatrixXcf a = MatrixXcf::Random(2,2);
+cout << "Here is the matrix a\n" << a << endl;
+
+cout << "Here is the matrix a^T\n" << a.transpose() << endl;
+
+
+cout << "Here is the conjugate of a\n" << a.conjugate() << endl;
+
+
+cout << "Here is the matrix a^*\n" << a.adjoint() << endl;
+
+

doc/snippets/tut_arithmetic_transpose_inplace.cpp

@@ -0,0 +1,4 @@
+MatrixXf a(2,3); a << 1, 2, 3, 4, 5, 6;
+cout << "Here is the initial matrix a:\n" << a << endl;
+a.transposeInPlace();
+cout << "and after being transposed:\n" << a << endl;

doc/snippets/tut_matrix_assignmnet_resizing.cpp

@@ -1,5 +0,0 @@
-MatrixXf a(2,2);
-cout << "a is of size " << a.rows() << "x" << a.cols() << std::endl;
-MatrixXf b(3,3);
-a = b;
-cout << "a is now of size " << a.rows() << "x" << a.cols() << std::endl;