从txt读取数据到Cvmat

前提已经得到txt的行列数目：

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#include <cv.h>

#include <highgui.h>

#include <fstream>

#include <iostream>

using namespace std;

int main()

{

    ifstream myfile( "E:\\feature_size.txt ");

    if (!myfile.is_open())

        cout << "Unable to open file";

    int rows = 0,cols = 0;

    myfile >> rows >> cols;

    //cout << f_m << " " << f_n;

    //矩阵存取

    //ifstream feature_file( "E:\\features.txt ");

    CvMat *fc = cvCreateMat(rows,cols,CV_32FC1);;

    ifstream fin("E:\\features.txt ",std::ifstream::in);

    for(int i = 0;i < rows; ++i)

        for(int j = 0;j < cols; ++j)

        {

            fin >> fc->data.fl[i*cols+j];

        }        

        fin.close();

        for(int i = 0;i < rows; ++i)

            for(int j = 0;j < cols; ++j)

               cout << cvmGet(fc,i,j)<<" ";

 

}