使用visual studio 2013读取.mat文件

时间：2024-11-05 00:07:32

现在有一个T.mat 文件需要在c++中处理然后以.mat 或是.txt形式返回

T．mat中存储了十个cell，每个cell中会有一个不等长的数组

1.以下是相关配置过程：

参考：http://wenku.baidu.com/link?url=3CiA3T6wtaBEUSJnpvmfmvZzaKXop1Ea68HM-s1S02fMZUm5dhYsqrC4tE4JNjbYbvnflEe7ZaRa5oqCQmNGBvmAi67ZujICsjxXKIuEzC

VC++ 包含目录 添加 D:\Program Files\MATLAB\R2014a\extern\include\win64;D:\Program Files\MATLAB\R2014a\extern\include;

连接器 常规 附加库目录 D:\Program Files\MATLAB\R2014a\extern\lib\win32\microsoft;D:\Program Files\MATLAB\R2014a\extern\lib\win64\microsoft

链接器 输入 附加依赖项 libmat.lib;libmx.lib;libmex.lib;libeng.lib

配置管理器中活动解决方案平台选择x64

更改环境变量path D:\Program Files\MATLAB\R2014a\extern\lib\win64\microsoft;D:\Program Files\MATLAB\R2014a\bin\win64

2.然后是读入的代码

//read .mat from matlab

#include <iostream>

#include <mat.h>

#include<iomanip>

#include <fstream>

#include <vector>

using std::vector;

int main()

{

    MATFile *pmatFile = NULL;

    mxArray *pMxArray = NULL, *pMxArray_i = NULL;

    double *pMx_cell_i = NULL;

    //读入.MAT

    pmatFile = matOpen("D:/Program Files/MATLAB/R2014a/work/mywork/test_for_data/mydata1.mat", "r");

    //std::cout << pmatFile;

    pMxArray = matGetVariable(pmatFile, "w");

    //size_t M = mxGetM(pMxArray);

    //size_t N = mxGetN(pMxArray);

    //std::cout << N;

    int num_of_cell{ (int)mxGetNumberOfElements(pMxArray) };

    std::cout << "the number of the CELL we have got for the T :" << num_of_cell << std::endl;

    //int A[10];由于数组 的长度需要事先给定，所以改用vector

    vector<int> V_A;

    //Matrix<double> A(num_of_cell, 1);

    for (int i{  }; i < num_of_cell; i++)

    {

        pMxArray_i = mxGetCell(pMxArray, i);

        int num_of_cell_i = (int)mxGetNumberOfElements(pMxArray_i);

        std::cout << "the number of the CELL " << i << " we have got for the T :" << num_of_cell_i << std::endl;

        double sum_i = ;

        for (int j{  }; j < num_of_cell_i; j++)

        {

            pMx_cell_i = mxGetPr(pMxArray_i);

            std::cout << std::setw() << *(pMx_cell_i + j);

            sum_i = sum_i + *(pMx_cell_i + j);

        }

        std::cout << std::endl;

        std::cout << "sum " << i << " is " << sum_i << std::endl;

        //A[i] = sum_i;

        V_A.push_back(sum_i);

                //

    }

    matClose(pmatFile);

    //mxFree(pMxArray);

    //mxFree(pMxArray_i);

    //mxFree(pMx_cell_i);

    //写到e:/data.TXT中

    FILE *p=NULL;

    //if ((p = fopen("e:\\data.txt", "wt")) != NULL)

    //for (int i = 0; i<10; i++)

    //    fprintf(p, "%d \n", A[i]);

    //fclose(p);

    //FILE *p;

    if ((p = fopen("e:\\data_V.txt", "wt")) != NULL)

    for (int i = ; i<num_of_cell; i++)

        fprintf(p, "%d \n", V_A.at(i));

    fclose(p);

}

后记：这里主要还是验证配置的正确性，只进行了一个加和运算。

修改：使用vector来存储计算结果，可以适应数据的长度改变。

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