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pshriwise
/ mp_psuedo_inv.cpp
Last active
August 26, 2024 03:00
Moore-Penrose Pseudo-Inverse Using Eigen
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| // method for calculating the pseudo-Inverse as recommended by Eigen developers | |
| template<typename _Matrix_Type_> | |
| _Matrix_Type_ pseudoInverse(const _Matrix_Type_ &a, double epsilon = std::numeric_limits<double>::epsilon()) | |
| { | |
| Eigen::JacobiSVD< _Matrix_Type_ > svd(a ,Eigen::ComputeFullU | Eigen::ComputeFullV); | |
| // For a non-square matrix | |
| // Eigen::JacobiSVD< _Matrix_Type_ > svd(a ,Eigen::ComputeThinU | Eigen::ComputeThinV); | |
| double tolerance = epsilon * std::max(a.cols(), a.rows()) *svd.singularValues().array().abs()(0); | |
| return svd.matrixV() * (svd.singularValues().array().abs() > tolerance).select(svd.singularValues().array().inverse(), 0).matrix().asDiagonal() * svd.matrixU().adjoint(); |
vicrucann
/ CMakeLists.txt
Created
June 14, 2016 18:08
OpenSceneGraph + QOpenGLWidget - minimal example
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| cmake_minimum_required(VERSION 2.8.11) | |
| project(qtosg) | |
| set(CMAKE_INCLUDE_CURRENT_DIR ON) | |
| set(CMAKE_AUTOMOC ON) | |
| find_package(Qt5 REQUIRED COMPONENTS Core Gui OpenGL) | |
| find_package(OpenSceneGraph REQUIRED COMPONENTS osgDB osgGA osgUtil osgViewer) | |
| include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS}) |
magthe
/ CMakeLists.txt
Last active
February 5, 2024 18:30
Complete example of D-BUS client and server using Qt5 and CMake.
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| cmake_minimum_required(VERSION 3.5) | |
| project(DBusTest) | |
| find_package(Qt5 CONFIG REQUIRED Core DBus) | |
| set(prog_SRCS my.test.Calculator.xml) | |
| qt5_generate_dbus_interface(Calc.hh | |
| my.test.Calculator.xml | |
| OPTIONS -A | |
| ) |
javidcf
/ pseudoinverse.cpp
Last active
July 27, 2022 21:21
Compute the pseudoinverse of a dense matrix with Eigen (C++11)
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| #include <Eigen/Dense> | |
| template <class MatT> | |
| Eigen::Matrix<typename MatT::Scalar, MatT::ColsAtCompileTime, MatT::RowsAtCompileTime> | |
| pseudoinverse(const MatT &mat, typename MatT::Scalar tolerance = typename MatT::Scalar{1e-4}) // choose appropriately | |
| { | |
| typedef typename MatT::Scalar Scalar; | |
| auto svd = mat.jacobiSvd(Eigen::ComputeFullU | Eigen::ComputeFullV); | |
| const auto &singularValues = svd.singularValues(); | |
| Eigen::Matrix<Scalar, MatT::ColsAtCompileTime, MatT::RowsAtCompileTime> singularValuesInv(mat.cols(), mat.rows()); |
turingbirds
/ moore_penrose_pseudoinverse.c
Last active
June 1, 2024 16:46
Compute the (Moore-Penrose) pseudo-inverse of a libgsl matrix in plain C.
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| /** | |
| * Compute the (Moore-Penrose) pseudo-inverse of a libgsl matrix in plain C. | |
| * | |
| * Compile uding: | |
| * | |
| * gcc moore_penrose_pseudoinverse.c -lgsl -lblas | |
| * | |
| * Dependencies: | |
| * - libgsl (GNU Scientific Library) | |
| * - libblas (Basic Linear Algebra Subprograms) |