void PrintMatrix(CvMat *Matrix,int Rows,int Cols)

{

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

    {

        for(int j=;j<Cols;j++)

        {

            printf("%.2f ",cvGet2D(Matrix,i,j).val[]);

        }

        printf("\n");

    }

}

int main()

{

    float Coordinates[]={1.5,2.3,

                                 3.0,1.7,

                                 1.2,2.9,

                                 2.1,2.2,

                                 3.1,3.1,

                                 1.3,2.7,

                                 2.0,1.7,

                                 1.0,2.0,

                                 0.5,0.6,

                                 1.0,0.9};

    CvMat *Vector1;

    CvMat *AvgVector;

    CvMat *EigenValue_Row;

    CvMat *EigenVector;  

    Vector1=cvCreateMat(,,CV_32FC1);

    cvSetData(Vector1,Coordinates,Vector1->step);

    AvgVector=cvCreateMat(,,CV_32FC1);

    EigenValue_Row=cvCreateMat(,,CV_32FC1);

    EigenVector=cvCreateMat(,,CV_32FC1);  

    cvCalcPCA(Vector1,AvgVector,EigenValue_Row,EigenVector,CV_PCA_DATA_AS_ROW);  

    printf("Original Data:\n");

    PrintMatrix(Vector1,,);  

    printf("==========\n");

    PrintMatrix(AvgVector,,);  

    printf("\nEigne Value:\n");

    PrintMatrix(EigenValue_Row,,);  

    printf("\nEigne Vector:\n");   //每一行是一个特征向量。

    PrintMatrix(EigenVector,,);

  cout<<"******************************"<<endl;

system("pause");

return ;

}