本征库-矩阵的伪逆(Matlab-Pinv) [英] Eigen Library - Pseudo-Inverse of Matrix (Matlab - pinv)

问题描述

我正在尝试使用本征库找到矩阵的伪逆.他们有一个确实可以实现它的类，但是我不知道该如何编写脚本的语法.

I am trying to find the pseudo-inverse of a matrix using the Eigen Library. They have a class that does implement it, however I do not know how to put script the syntax.

这就是它在网站上的显示方式( https://eigen.tuxfly .org/dox/classEigen_1_1CompleteOrthogonalDecomposition.html#ab2fd4c81aa1cd8bc917c7f135505cb7f ):

This is how it is shown on the website (https://eigen.tuxfamily.org/dox/classEigen_1_1CompleteOrthogonalDecomposition.html#ab2fd4c81aa1cd8bc917c7f135505cb7f):

const Inverse Eigen :: CompleteOrthogonalDecomposition< MatrixType> :: pseudoInverse()const

const Inverse Eigen::CompleteOrthogonalDecomposition< MatrixType >::pseudoInverse ( ) const

推荐答案

这是CompleteOrthogonalDecomposition类的方法.因此，在使用矩阵之前，必须对矩阵进行分解.例如

It's a method of the CompleteOrthogonalDecomposition class. So you have to perform that decomposition of a matrix before you use it. For example

#include <Eigen/QR>    

Eigen::MatrixXd A = ... // fill in A
Eigen::MatrixXd pinv = A.completeOrthogonalDecomposition().pseudoInverse();

这篇关于本征库-矩阵的伪逆(Matlab-Pinv)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！