c++ 类内部 使用 new delete

低级错误:

/**
* @clusterNums 默认为5 分类数目
* @xyVector 处理后点云数据 x y顺序存储 
*/
int GMM::runGMM(int clusterNums, const std::vector<db::Point2f> & xyVector, std::vector<db::pointCuster> & xyCusterVector){

    int dim = 2;

    datanums = xyVector.size();
    data = new double*[datanums];

    for (int i = 0, j = 0; j < xyVector.size(); j++, i++)
    {
        data[i] = new double[dim];
        data[i][0] = xyVector[j].x;
        data[i][1] = xyVector[j].y;
    }
    GMM gmm;
    result = gmm.GMM_Cluster(data, datanums, dim, clusterNums);
    //multimap<int, pair<double, double>>cluster;
    vector<vector<int>>clusters;
    clusters.resize(clusterNums);

    for (int i = 0; i < datanums; i++)
    {
        //cluster.insert(pair<int, pair<double, double>>
        //    (result[i], pair<double, double>(data[i][0], data[i][1])));
        clusters[result[i]].push_back(i);
        //cout << result[i] << endl;
    }

    for (int i = 0; i < clusterNums; i++)
    {
        db::pointCuster tempCuster;
        xyCusterVector.push_back(tempCuster);

        for (int j = 0; j < clusters[i].size(); j++)
        {
            db::Point2f tempPoint;
            xyCusterVector[i].push_back(tempPoint);

            xyCusterVector[i][j].x = data[clusters[i][j]][0];
            xyCusterVector[i][j].y = data[clusters[i][j]][1];
        }
    }

    return 0;
}

 

总结：一定不要在类的内部，实例化它自己的对象，导致内存释放错误。