Ubuntu安装eigen
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Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
1.官网下载源码
http://eigen.tuxfamily.org/index.php?title=Main_Page
2.解压后,在源码目录创建一个新目录
1) mkdir build
2) cd build
3) cmake ..
4) make
5) sudo make install
3.默认安装到//usr/local/include/eigen3
cd /usr/local/include/eigen3
sudo cp * ../ -a
PS:由于eigen是一个模板类,并没有实际编译成动态库,此处只是将相应头文件拷贝到系统默认目录下/usr/lcoa/include/
3.test
#include <iostream>
#include <vector>
#include "Eigen/Dense"
using std::cout;
using std::endl;
using std::vector;
using Eigen::VectorXd;
using Eigen::MatrixXd;
// Kalman Filter variables
VectorXd x; // object state
MatrixXd P; // object covariance matrix
int main() {
/**
* Code used as example to work with Eigen matrices
*/
// design the KF with 1D motion
x = VectorXd(2);
x << 0, 0;
std::cout<<"Matrix x:\n"<<x<<std::endl;
P = MatrixXd(2, 2);
P << 1000, 0, 0, 1000;
std::cout<<"Matrix P:\n"<<P<<std::endl;
}
g++ km.cpp
./a.out