<![CDATA[求问大佬，float数组如何转到Eigen::MatrixXf???]]>从float数组转到Eigen的矩阵，除了遍历，有啥快速的方法吗？

#include <iostream>
#include "eigen3/Eigen/Eigen"
#include "eigen3/Eigen/Core"


using namespace std;
using namespace Eigen;

 
int main(){
 
 int n_dets = 100;
  float* data = new float[n_dets * 6];
  for (int i = 0; i < n_dets*6; i++)
  {
    // 600
    data[i] = 334.;
  }

// we want convert data into a Matrix
  MatrixXf m1;
  m1.data() = data;

  cout << m1.size() << endl;
     
  return 0;
}
]]>http://t.manaai.cn/topic/200/求问大佬-float数组如何转到eigen-matrixxfRSS for NodeFri, 11 Sep 2026 08:14:47 GMTMon, 23 Sep 2019 09:23:57 GMT60<![CDATA[Reply to 求问大佬，float数组如何转到Eigen::MatrixXf??? on Mon, 23 Sep 2019 09:23:57 GMT]]>从float数组转到Eigen的矩阵，除了遍历，有啥快速的方法吗？

#include <iostream>
#include "eigen3/Eigen/Eigen"
#include "eigen3/Eigen/Core"


using namespace std;
using namespace Eigen;

 
int main(){
 
 int n_dets = 100;
  float* data = new float[n_dets * 6];
  for (int i = 0; i < n_dets*6; i++)
  {
    // 600
    data[i] = 334.;
  }

// we want convert data into a Matrix
  MatrixXf m1;
  m1.data() = data;

  cout << m1.size() << endl;
     
  return 0;
}
]]>http://t.manaai.cn/post/452http://t.manaai.cn/post/452Mon, 23 Sep 2019 09:23:57 GMT<![CDATA[Reply to 求问大佬，float数组如何转到Eigen::MatrixXf??? on Mon, 23 Sep 2019 09:56:54 GMT]]>the answer is here:https://blog.csdn.net/sinat_28751869/article/details/79425491

]]>http://t.manaai.cn/post/453http://t.manaai.cn/post/453Mon, 23 Sep 2019 09:56:54 GMT<![CDATA[Reply to 求问大佬，float数组如何转到Eigen::MatrixXf??? on Mon, 23 Sep 2019 10:19:41 GMT]]>A little useful explaination on Eigen:

https://blog.csdn.net/huyaoyu/article/details/78454249

this teach us how to do slicing operation on Eigen matrix.

]]>http://t.manaai.cn/post/454http://t.manaai.cn/post/454Mon, 23 Sep 2019 10:19:41 GMT